TERRY, Senior Judge:
After a jury trial, appellant was convicted of second-degree murder while armed and various weapons offenses.1 On appeal he contends that his rights under Miranda2 and the Fifth and Sixth Amendments were violated, that his statement to the police was erroneously admitted into evidence in violation of the Mallory-McNabb rule,3 and that certain conduct by the prosecutor prejudiced his case and requires reversal. We find all of appellant’s arguments without merit and affirm the judgment.
I
At about 4:30 a.m. on July 9, 1999, Michael Day was talking with another man known as “John-John”4 at the corner of Third and L Streets, S.E. Robin Holliday, who knew both men, walked over to them and exchanged a few words while taking out her trash.5 Two unidentified women then approached Mr. Day asking for drugs. After they gave him some money, Mr. Day began walking toward a green dumpster located nearby while Ms. Holli-day and the two women remained standing at the corner. John-John also walked away. Moments later, Ms. Holliday heard four gunshots. After hesitating for a minute or two, she started to walk in the direction of the dumpster, and as she drew nearer, she heard someone crying for help. She headed toward the source of that cry and found Mr. Day, partially clothed and bleeding, lying on the steps in front of a house at 323 K Street, S.E. He had been shot and had stumbled onto a neighbor’s front porch, where Ms. Holliday found him. She immediately called out for assistance.
After staying with Mr. Day for a few minutes, Ms. Holliday decided to look for someone from his family, who lived in the apartment beneath hers. As she headed back to her apartment building, Ms. Holli-day was passed by a heavy-set man in a white T-shirt and jeans who was “running at a little pace” and appeared to be hiding something underneath his shirt. Just as [1152]*1152he went past her, the man exclaimed, “Somebody better help that boy.” She testified that this man looked like appellant, whom she had known for about three or four years. Ms. Holliday and Mr. Day’s uncle soon returned to the wounded Mr. Day, and there they waited for the police and an ambulance.6
After the police arrived, Detective Steven Slaughter began to interview Ms. Hol-liday. As they were talking, appellant walked by, wearing the same clothing that Ms. Holliday had seen a few minutes earlier, and asked her, “Is the [man] dead yet?” About ten minutes later, appellant appeared again and asked if “Mike” was dead. On this last occasion, Ms. Holliday noticed that appellant had changed his clothes. Detective Slaughter asked appellant whether he wanted to make a statement concerning the shooting, but appellant answered, “Hell no,” and walked away.7 The police then drove Ms. Holli-day to the First District police station, where she gave a written statement.
Another neighborhood resident, Joseph Matthews, was on his way home in the early morning hours of July 9 when he saw Mr. Day and a group of other persons gambling on the sidewalk across the street from his apartment. After entering his home and preparing for bed, Mr. Matthews heard an argument outside. He looked out the window and saw Mr. Day, appellant, and John-John standing on the corner. Appellant had a pistol in his hand and was arguing with Mr. Day about money. As the argument continued, Mr. Day took off his shirt and was in the process of removing his trousers when Mr. Matthews heard a gunshot, which he said was fired after Mr. Day had lunged at appellant and been pushed backwards. Mr. Matthews ducked and then heard about four more shots. As he peered out his window, he saw appellant and John-John running away, while Mr. Day stumbled onto a nearby porch. When Mr. Matthews saw appellant in the neighborhood the next day, appellant said that he “didn’t mean to shoot him, and that’s it,” and that he was going to turn himself in to the police.8
Sylvester Summers, who lived about two blocks from the scene of the shooting, echoed the testimony of Mr. Matthews. He said that he saw two men “tussling, wrestling” in the early morning hours of July 9 as he was walking home after a night out. At first Mr. Summers paid little attention to the two men, but after hearing a gunshot, he looked at the men and saw that “the taller guy” had a gun in his hand. Uncertain about what to do next, Mr. Summers continued toward his home, but when he heard another shot, he ran into a neighbor’s yard and hid for several minutes. Upon re-emerging, Mr. Summers saw Mr. Day leaning against a fence, trying to hold himself up. Although Summers did not know appellant by name [1153]*1153on the day of the shooting, he positively identified him at trial as the gunman.
After interviewing several eyewitnesses, the police obtained a warrant for appellant’s arrest on November 8, almost four months after the shooting. On November 12 Detective Don Sauls picked up appellant, who was in custody on an unrelated charge, and brought him to the First District police station for questioning. When appellant was told he had been taken into custody in connection with the death of Michael Day, he responded that he was in jail on the date of the murder.9 After being advised of and waiving his Miranda rights, appellant spoke with several detectives but offered little information. However, after being told by Detective Robert Saunders that witnesses had reported that he acted in self-defense on the night in question,10 he replied, “You guys don’t have any witnesses. There was nobody back there but me and Michael.”
Only after appellant requested and was granted permission to speak with Detective Michael Fulton did he give a more detailed version of what happened.11 During his conversation with Detective Fulton, appellant described a confrontation he had had with Mr. Day on July 8 about Day’s alleged sale of drugs to one of appellant’s drug customers. Later that evening, appellant claimed, Mr. Day hit him with a gun without any reason. A struggle then ensued, in the course of which the gun discharged several times. Appellant also told the detective that during the struggle he tried to stab Mr. Day with a knife. When asked if he had attempted to rob Mr. Day, appellant said he “didn’t have time to take his money.” He added that there were no other witnesses and that someone else must have picked up the gun, which was never recovered.
II
In reviewing the denial of a motion to suppress evidence, this court accepts the trial court’s factual findings unless they are clearly erroneous or not supported by the record. Ball v. United States, 803 A.2d 971, 974 (D.C.2002); Powell v. United States, 649 A.2d 1082, 1084 (D.C.1994); see D.C.Code § 17-305(a) (2001). Moreover, the facts and all reasonable inferences therefrom must be viewed in the fight most favorable to sustaining the trial court’s ruling. See Peay v. United States, 597 A.2d 1318, 1320 (D.C.1991) (en banc). “Essentially,” this court’s role in reviewing the denial of a motion to suppress “is to ensure that the trial court had a substantial basis for concluding that no constitutional violation occurred.” Brown v. United States, 590 A.2d 1008, 1020 (D.C.1991) (citation omitted); accord, e.g., Thompson v. United States, 745 A.2d 308, 312 (D.C.2000).
In his motion to suppress, appellant challenged the admissibility of the statements he made to the police on several grounds, and on appeal he presents the same arguments. First, he contends that his Fifth and Sixth Amendment rights to counsel were asserted in open court, but were later disregarded at the station house [1154]*1154when detectives questioned him without the presence of his attorney. Second, appellant asserts that he never knowingly or intelligently waived his Miranda rights before being questioned by the police. Finally, he maintains that he was not presented in court until after the permissible time limit under the Mallory and McNabb line of cases and that any statements made during that period of unnecessary delay should therefore be held inadmissible. After an evidentiary hearing, the trial court denied appellant’s motion to suppress. We find no error in that denial.
A. Sixth Amendment Right to Counsel
Appellant argues, first, that because his counsel at an unrelated probation revocation hearing asserted his rights under the Fifth and Sixth Amendments when the judge learned of appellant’s outstanding warrant in this case, his subsequent statements to the police detectives should be suppressed.
The Sixth Amendment to the Constitution provides generally that “in all criminal prosecutions, the accused shall enjoy the right ... to have the Assistance of Counsel for his defence.” See McNeil v. Wisconsin, 501 U.S. 171, 175, 111 S.Ct. 2204, 115 L.Ed.2d 158 (1991); Sweet v. United States, 756 A.2d 366, 377-378 (D.C.2000). However, this right “cannot be invoked once for all future prosecutions, for it does not attach until a prosecution is commenced, that is, ‘at or after the initiation of adversary judicial criminal proceedings — whether by way of formal charge, preliminary hearing, [or] ... arraignment.’ ” McNeil, 501 U.S. at 175, 111 S.Ct. 2204 (citation omitted); accord, Kirby v. Illinois, 406 U.S. 682, 688, 92 S.Ct. 1877, 32 L.Ed.2d 411 (1972) (Sixth Amendment right to counsel attaches “only at or after [the initiation of] adversary judicial proceedings” (citing cases)). The Supreme Court has “never held that the [Sixth Amendment] right to counsel attaches at the time of arrest.” United States v. Gouveia, 467 U.S. 180, 190, 104 S.Ct. 2292, 81 L.Ed.2d 146 (1984); see Riley v. United States, 923 A.2d 868, 880-881 (D.C.2007) (Sixth Amendment right does not attach at time of arrest; filing complaint to obtain arrest warrant is “not the same formal charge[] of which Kirby speaks”).
According to the evidence at the suppression hearing, Detective Sauls on November 8, 1999, obtained an arrest warrant for appellant. On November 10 appellant appeared in the Superior Court before Judge Russell Canan in an unrelated case and was ordered held without bond because of a possible violation of probation. Judge Canan was then alerted to the fact that appellant was the subject of an outstanding arrest warrant for the murder of Michael Day. No proceedings concerning the warrant were held before Judge Canan, but appellant’s counsel at the probation revocation hearing, James McCloud, asserted in open court appellant’s Fifth and Sixth Amendment right to counsel with respect to the murder charge. The following day, November 11, Detective Sauls learned that appellant was in custody for a potential violation of probation, and on November 12 Sauls picked him up and brought him to the First District police station for questioning.
At the suppression hearing, Mr. McCloud acknowledged that when he asserted appellant’s right to counsel, no formal proceedings in the murder case had yet begun. We agree with the trial judge’s observation that Mr. McCloud acted prematurely (but commendably) in invoking appellant’s Sixth Amendment right to counsel because, as Kirby and McNeil make clear, that right had not yet attached in this case. Mr. McCloud’s attempt to assert appellant’s Sixth Amendment right [1155]*1155in this case at the probation revocation hearing had no legal effect because appellant’s presence in the courthouse was unrelated to the murder charge.12 See Texas v. Cobb, 532 U.S. 162, 167-168, 121 S.Ct. 1335, 149 L.Ed.2d 321 (2001) (Sixth Amendment right to counsel is “offense-specific” (citing McNeil, 501 U.S. at 175-176, 111 S.Ct. 2204)). Moreover, from the mere fact that the purported assertion of a Sixth Amendment right occurred in open court, it does not follow that formal adversarial proceedings had begun concerning the murder charge. This would be true even if the two cases were “factually related,” and here they were not. See Cobb, 532 U.S. at 167-168, 121 S.Ct. 1335; see also Maine v. Moulton, 474 U.S. 159, 180, 106 S.Ct. 477, 88 L.Ed.2d 481 (1985) (“to exclude evidence pertaining to charges as to which the Sixth Amendment right to counsel had not attached at the time the evidence was obtained, simply because other charges were pending at that time, would unnecessarily frustrate the public’s interest in the investigation of criminal activities”); In re A.L.M., 631 A.2d 894, 899-900 (D.C.1993) (appointment of counsel for a juvenile in a prior case did not preclude the police from questioning him about an unrelated murder).
Appellant relies primarily on Minnick v. Mississippi 498 U.S. 146, 111 S.Ct. 486, 112 L.Ed.2d 489 (1990), to support his claim that his Sixth Amendment right to counsel was violated. But Minnick is distinguishable, both on its facts and in its reasoning. The defendant in Minnick challenged the admission of a statement that he made to the police after speaking to his attorney, arguing that he had never waived his Miranda rights. A state court held that because he had consulted with his attorney, the statement could be admitted despite Miranda, and ruled that Edwards v. Arizona, 451 U.S. 477, 101 S.Ct. 1880, 68 L.Ed.2d 378 (1981), was “inapplicable.” The Supreme Court reversed, holding (as it had previously held in Edwards) that once an accused requests counsel during an interrogation, all questioning must cease and cannot be resumed without counsel present. 498 U.S. at 150-151, 111 S.Ct. 486. We agree with the government that Minnick is inapposite to appellant’s present Sixth Amendment claim, since it involved only Miranda and the Fifth Amendment and, as the government states in its brief, “did not affect Sixth Amendment jurisprudence in any way.”13
For these reasons, we hold that there was no violation of appellant’s Sixth Amendment right to counsel.
B. Fifth Amendment Right to Counsel
Appellant’s claim that his Fifth Amendment rights were violated is equally unavailing. For an individual to gain the protection of the Fifth Amendment right to counsel in a situation such as the one presented here, two conditions must exist. First, the accused must be in custody; second, the accused must be under interrogation. Miranda, 384 U.S. at 444, 86 S.Ct. 1602; see Rhode Island v. Innis, 446 U.S. 291, 300-301, 100 S.Ct. 1682, 64 L.Ed.2d 297 (1980) (Miranda protections attach only after a person is in custody and subject to custodial interrogation “or its functional equivalent”); Jones v. United States, 779 A.2d 277, 281 (D.C.2001) (en banc) (“there must be both ‘custody' and ‘interrogation’ at the same time” before Mi[1156]*1156randa can apply). Furthermore, these rights cannot be invoked in anticipation of a custodial interrogation. See McNeil, 501 U.S. at 182 n. 3, 111 S.Ct. 2204.
We need not decide whether an attorney can invoke the Fifth Amendment rights of his client while representing him in a separate matter because appellant was not subjected to interrogation until after he was taken to the First District police station for questioning. Once there, appellant was properly read his Miranda rights and voluntarily signed a police department form waiving them. Interrogation then followed. Because the invocation of his Fifth Amendment rights was made before they were legally available — i.e., before he was in custody in this case and subject to interrogation — no possible violation of those rights occurred. The proper time to invoke his Fifth Amendment right was pri- or to the police questioning at the station house, not at the courthouse during an unrelated hearing. See McNeil, 501 U.S. at 182 n. 3, 111 S.Ct. 2204 (“Most rights must be asserted when the government seeks to take the action they protect against”).
C. Waiver of Miranda Rights
Appellant also challenges the trial court’s finding that the waiver of his Miranda rights was voluntary. Because appellant had little formal education, he maintains that his waiver was not “knowing and intelligent.” This argument is without support in the record.14
It has long been established that statements made by a suspect while in police custody are inadmissible unless the police advise him of his Miranda rights prior to interrogation. See Miranda, 384 U.S. at 479, 86 S.Ct. 1602; see also, e.g., Lewis v. United States, 483 A.2d 1125, 1127 (D.C.1984).15 However, under Miranda the suspect may waive his rights and give a statement to police. See, e.g., In re M.A.C., 761 A.2d 32, 35-36 (D.C.2000). When a defendant later challenges the admissibility of such a statement, “the government has the burden of proving that the waivers of the privilege against self-incrimination and the right to counsel were made knowingly, intelligently, and voluntarily.” Id. at 36 (citations omitted); see Miranda, 384 U.S. at 475, 86 S.Ct. 1602. “The voluntariness of the Miranda waiver is to be determined by reference to the totality of the circumstances with consideration given to appellant’s previous experience with the legal system as well as his sophistication in matters of a criminal nature.” Madison v. United States, 512 A.2d 279, 282 (D.C.1986) (citation omitted).
Detective Sauls testified that, while at the police station, he advised appellant of his rights from a PD-47 “rights card.” On the card there was a space for appellant to answer yes or no to each of the following questions; (1) “Do you understand your rights?” (2) “Do you wish [1157]*1157to answer any questions?” and (3) “Are you willing to answer any questions without having an attorney present?” When he finished reading the card, appellant wrote the word “yes” in the blank following each question, wrote his initials after each “yes,” and then signed the card at the bottom. Detective Garvey also signed the card, and Detective Sauls witnessed his signature.
There was no evidence that appellant was coerced or tricked into signing the PD^47. See United States v. Brooks, 125 F.3d 484, 492 (7th Cir.1997) (coercion is one factor relevant in determining the vol-untariness of a waiver). Nor was there any other evidence from which the court could find that his Miranda waiver was involuntary. Given appellant’s prior experience in the criminal justice system16 and the testimony of Detectives Sauls and Garvey about the signing of the PD-47, we have no reason to question the trial court’s finding that he was aware of his Miranda rights and waived them knowingly and voluntarily.17 See Madison, 512 A.2d at 282.
D. Timeliness of Presentment: Mallory-McNabb
Appellant was held in custody for three days before being formally presented on a murder charge in connection with Michael Day’s death.18 He argues that this was an undue delay in violation of Super. Ct. Crim. R. 5 and the Mallory-McNabb rule.
Criminal Rule 5(a) states that an arrested individual must be presented before a judicial officer “without unnecessary delay.” This court has consistently held, however, that a valid waiver by an accused of his Miranda rights is also a waiver of his right under Mallory and McNabb, supra note 3, to presentment without unnecessary delay. See Bond v. United States, 614 A.2d 892, 899 (D.C.1992) (citing cases); accord, e.g., Outlaw v. United States, 806 A.2d 1192, 1200 (D.C.2002); United States v. Bell, 740 A.2d 958, 963-964 (D.C.1999). Indeed, that has been the law in this jurisdiction since shortly after the Miranda decision came down. See Pettyjohn v. United States, 136 U.SApp. D.C. 69, 74, 419 F.2d 651, 656 (1969), cert. denied, 397 U.S. 1058, 90 S.Ct. 1383, 25 L.Ed.2d 676 (1970);19 Everetts v. United States, 627 A.2d 981, 984-987 (D.C.1993). Furthermore, “[t]he waiver is valid even if obtained during the period of unnecessary delay.” Bell, 740 A2d at 963 (citations omitted).
Thus, under Pettyjohn and later cases, when appellant voluntarily signed [1158]*1158the PD-47 card waiving his Miranda rights, he also waived his right to presentment without unnecessary delay. The fact that this waiver may have been obtained during a time that might, under other circumstances, be considered a period of unnecessary delay is of no consequence once a waiver has occurred. See Bell, 740 A.2d at 963. Even absent the valid waiver, the delay between appellant’s detention and presentment was not so extreme as to violate his rights. See, e.g., Bond, 614 A.2d at 901 (voluntary confession made thirty-six hours after arrest, during a sixty-two hour presentment delay, was nevertheless admissible). As the trial court found, when appellant finished his statement to the police on November 12, it was too late in the day for him to be brought before a magistrate. Appellant was presented the following morning, which was the next available time.
We therefore hold that there was no violation of the Mallory-McNabb rule or Criminal Rule 5.
III
Appellant argues that the prosecutor engaged in conduct that prejudiced his case before and during his trial, and that the trial court should have sanctioned the government for this improper behavior. In particular, appellant asserts that the prosecutor (1) impermissibly consulted with a witness during a recess, in violation of the court’s instruction, (2) made improper comments during his opening and closing statements to the jury, and, among other things, (3) persistently made use of leading questions on direct examination. After reviewing the extensive record, we find no basis for reversal. Although the prosecutor may have crossed the line into forbidden territory on a couple of occasions, his transgressions were relatively minor, and any potential prejudice was quickly cured by the alert and attentive trial judge. We are not persuaded that any of the prosecutor’s conduct substantially prejudiced appellant, especially when appellant’s claims of impropriety are weighed against the strength of the government’s case.
A. Discussion with a Witness
Appellant’s primary claim of misconduct involves the prosecutor’s conversation with Detective Sauls during a recess in his cross-examination at the suppression hearing. Despite an admonition from the court to Detective Sauls that he should not discuss his testimony with anyone, the prosecutor spoke with him about a mistake he had made in answering a question on direct examination about when he advised appellant of his Miranda rights. After the conversation was revealed, the court orally admonished the prosecutor but did not impose any sanctions. Appellant now contends that it was error for the court not to do so and claims that his counsel’s subsequent cross-examination of Detective Sauls was prejudiced as a result. He also moved to strike Detective Sauls’ redirect testimony in its entirety, which the court denied.
In general, the trial court has broad discretion to determine the appropriate remedy for violations of the so-called “rule on witnesses.” See Benn v. United States, 801 A.2d 132, 141 (D.C.2002); Brown v. United States, 388 A.2d 451, 456 (D.C.1978).20 When reviewing a decision on whether or not to permit testimony after there has been a violation of the rule, this court will reverse only for an abuse of discretion. Bourn v. United [1159]*1159States, 567 A.2d 1312, 1317 (D.C.1989). Testimony should normally be excluded only under extreme circumstances. Brown, 388 A.2d at 456 (“Generally, the violation of the court order must be so egregious that it ‘has somehow so discredited the witness as to render his testimony incredible as a matter of law” ” (citation omitted)); see Holder v. United States, 150 U.S. 91, 92, 14 S.Ct. 10, 37 L.Ed. 1010 (1893).
As the government correctly points out, the traditional remedy for a violation of a court order prohibiting witnesses from discussing their testimony with anyone else is cross-examination. See Geders, supra note 20, 425 U.S. at 89-90, 96 S.Ct. 1330; Brown, 388 A.2d at 457. In this case, Detective Sauls was specifically cross-examined about the discussion he had with the prosecutor during the break in his testimony. Appellant’s present claim that his ability to cross-examine Detective Sauls was impaired because of the detective’s conversation with the prosecutor is thus refuted by the record. In addition, appellant suggests a multitude of sanctions which the court could have imposed on the prosecutor for violating its order to refrain from speaking to the witness. Trial judges, however, have broad discretion in deciding what sanctions, if any, should be imposed on those who violate their orders. The draconian measures proposed by appellant, such as the declaration of a mistrial and striking the detective’s testimony in its entirety, are not often used; more importantly, they do not fit the circumstances of this case. See Benn, 801 A.2d at 140-141 (“a witness who has violated a sequestration order may be excluded from the witness stand only under extreme and exceptional circumstances”).
The need to sanction the government in this instance is especially doubtful. Appellant claims that Detective Sauls’ testimony was “tainted” by his talking with the prosecutor during the break in the hearing. When the proceedings were reconvened, the prosecutor admitted that he had violated the court’s order and had spoken to the witness during his cross-examination. However, on redirect the prosecutor elicited only information about a mistake in the detective’s testimony on direct that he made before the break concerning when he advised appellant of his Miranda rights. Because no new information was introduced after the prosecutor spoke to the witness, there is no basis for concluding that all of his testimony was tainted or should be stricken. As the trial court stated, sanctioning the prosecutor or striking Detective Sauls’ testimony was unnecessary “[b]ecause his testimony did not change on redirect from that which had already been elicited.”
Appellant also refers to a violation of the purported “rule” in Thacker v. United States, 599 A.2d 52 (D.C.1991), to support his claim that the prosecutor’s misconduct in talking to Detective Sauls should have resulted in severe sanctions. In Thacker this court held that the trial court did not commit plain error by failing to order, sua sponte, sequestration of the government witnesses. Id. at 60. We also went on to hold that, in light of the record, there was nothing improper about the prosecutor’s contact with a government witness during the trial. Id. Appellant tries to expand this holding with the assertion that because the prosecutor in this case spoke with Detective Sauls in violation of the court’s order, automatic sanctions should follow. Not only is this argument without support in Thacker, but we have found no case which holds that once an attorney violates a court order, such as one prohibiting witness contact, sanctions must follow automatically. See Benn, 801 A.2d at 141. [1160]*1160Neither Thacker nor any other case that we have found limits the trial court’s discretion in the manner suggested by appellant.
We therefore find no abuse of discretion or other legal error in the court’s failure to impose a sanction for the prosecutor’s violation of its directive not to speak to the witness.
B. Allegedly Improper Comments
During his opening statement, and again in his closing argument, the prosecutor referred to the murder of Michael Day in vivid terms. He noted that Mr. Day’s “young life was brought to an abrupt and violent halt” and “was snuffed out by a man with an axe to grind.” He further commented that Mr. Day’s “life was draining, literally draining out of his body” and characterized appellant as having a “reckless disregard for human life.” In one instance during his opening statement, the prosecutor expressed his personal opinion when he remarked that a particular witness’ testimony would be “honest.” Appellant argues that these comments should have resulted in sanctions of varying degrees against the government. Although the comments at issue may perhaps have been more colorful than is customary, and although the characterization of the witness’ testimony as “honest” should have been left unsaid, any prejudice suffered by appellant was minimal at best, given the strength of the government’s case and the court’s curative instructions.
Our standard of review is well established. In reviewing appellant’s contentions, this court must first consider whether the prosecutor’s comments were improper. See Dancy v. United States, 745 A.2d 259, 270 (D.C.2000); Diaz v. United States, 716 A.2d 173, 179 (D.C.1998); McGrier v. United States, 597 A.2d 36, 41 (D.C.1991). If we decide that they were, we will then evaluate the claim of error by “viewing the [remarks] in context ... considering] the gravity of the [impropriety], its relationship to the issue of guilt, the effect of any corrective action by the trial judge, and the strength of the government’s case.” Dixon v. United States, 565 A.2d 72, 75 (D.C.1989) (citation omitted). This court will reverse only if it can confidently say that the verdict was “substantially swayed” by the error. Kotteakos v. United States, 328 U.S. 750, 765, 66 S.Ct. 1239, 90 L.Ed. 1557 (1946); see Hawkins v. United States, 606 A.2d 753, 756-757 (D.C.1992) (reversal is justified only where the challenged conduct “bring[s] about substantial prejudice”); McGrier, 597 A.2d at 41; Irick v. United States, 565 A.2d 26, 32 (D.C.1989). In this case, moreover, our review as to most of appellant’s claims is only for plain error because — with one exception — none of the prosecutor’s comments at trial elicited any objection from defense counsel. See Chatmon v. United States, 801 A.2d 92, 99 (D.C.2002); McGrier, 597 A.2d at 41 (absent an objection, reversal “is appropriate only in a ‘particularly egregious’ case, when ‘a miscarriage of justice would otherwise result’” (citation omitted)). Finally, “although [appellant’s] complaint is primarily with the prosecutor, it is our function to review the record for legal error or abuse of discretion by the trial judge, not by counsel.” Irick, 565 A.2d at 33. The question we must decide, as we have said many times, is whether the trial judge erred by “fail[ing] to intervene sua sponte when such intervention [was] called for ... or to react with sufficient promptness and vigor to . prosecutorial misdeeds ... and our ultimate focus must therefore be on what the judge did or failed to do.” Id. (citations omitted).
As this court said in Dixon, “[s]ome types of cases, particularly those [1161]*1161involving tragic death or injury, have an inherent emotional impact_The prosecutor ... [is not] required to sanitize the government’s evidence or make it appear less wrenching than it is.” 565 A.2d at 76 (citation omitted); accord, e.g., Mills v. United States, 599 A.2d 775, 786 (D.C.1991) (“Many of the challenged comments appear to us to have been descriptions of the evidence in an especially horrifying and gory case, and to have fallen within the limits of permissible argument”). The victim in this case was shot in the abdomen and, according to the medical examiner, bled to death as a result of his wounds. Under our case law, reference to the grim details of his death was well within the permissible bounds of comment. Moreover, the prosecutor was under no obligation to remove evidence from the jury’s consideration or to lessen its impact merely because it was potentially dramatic. See Thacker, 599 A.2d at 60 (holding that prosecutor’s references to a murder victim as having been “carved up” and “butchered” were not improper). Given the strong evidence of appellant’s guilt, it is not likely that these brief comments “substantially swayed” the verdict.
The prosecutor also offered his opinion about witness credibility during his opening statement when he said, “A witness is going to be honest with you, just like Robin Holliday, that [she] just didn’t want to get involved.” We have repeatedly said that “[i]t is improper for a lawyer to express a personal opinion about a witness’ veracity during arguments to the jury.” McGrier, 597 A.2d at 43 (citations omitted). We see no reason why the same principle should not apply to opening statements, and thus we conclude that the comment was improper. But defense counsel objected, and the objection was sustained.21 The court then told the jurors to “disregard any statements by counsel as to whether people can be believed or not.”22 Appellant insists that this curative instruction was not enough. Again, however, when the prosecutor’s remark is weighed against the government’s strong case, appellant’s assertion that he suffered “substantial prejudice” strains logic, especially when the court told the jurors to ignore the comment seconds after it was made. See Hawkins, 606 A.2d at 756-757.
C. Leading Questions and Other Concerns
Appellant argues that the trial court erred in failing to sanction the prosecutor for asking an abundance of leading questions on direct examination. He also offers what amounts to a detailed critique of the prosecutor’s performance at trial. Included in this array of criticism is a suggestion that the trial court should have sanctioned the prosecutor for (1) failing to refresh a witness’ recollection in the proper manner, (2) improperly injecting testimony while questioning a witness, (3) asking questions that provoked a hearsay response, and (4) inappropriately leaning against the jury box. Again, while some of the prosecutor’s lapses could have been avoided, none of them, either individually or cumulatively, resulted in any significant prejudice to appellant.23
[1162]*1162Although not typical on direct examination, leading questions are sometimes permissible. See Bailey v. United States, 831 A.2d 973, 984 (D.C.2003) (trial court “has fairly broad discretion to allow leading questions to be asked” on direct examination); Arnold v. United States, 511 A.2d 399, 410 (D.C.1986) (“the court in its discretion may allow counsel to probe and test a witness’ recollection, even by asking leading questions”); Jenkins v. United States, 500 A.2d 1019, 1021 (D.C.1985) (allowing prosecutor to ask leading questions on direct examination was not an abuse of discretion); Green v. United States, 121 U.S.App. D.C. 111, 112, 348 F.2d 340, 341 (1965) (leading questions on direct are permissible under certain circumstances). In this case, moreover, the trial court sustained each objection made by defense counsel after a leading question. On one such occasion, the court admonished the prosecutor to “keep it non-leading,” and after another such incident the court told the jury to disregard the prosecutor’s question. Given these actions by the trial court, we are satisfied that if there was any potential prejudice, it was quickly cured, and appellant’s right to a fair trial was protected. Here, as in Bailey, the record “clearly and repeatedly demonstrates that the trial judge was alert to the possibility of prejudice and acted appropriately.” 831 A.2d at 984.
The remaining criticisms are not sufficiently significant to require extended discussion. Appellant has simply highlighted what were, at worst, minor mistakes by the prosecutor during the trial in the hope of showing- that collectively they prejudiced the defense. He has failed to cite any supporting ease law for the proposition that improperly injecting testimony while questioning a witness, asking questions that elicited a hearsay response, or momentarily leaning against the jury box should result in the sanctions he urges, let alone a reversal of his conviction. We are satisfied that these modest transgressions (if indeed they can even be called that) were “too trivial to worry about.” Scott v. United States, 619 A.2d 917, 929 (D.C.1993).
IV
The judgment of conviction is
Affirmed.