Judge OHLSON delivered the opinion of the Court.*
A general court-martial composed entirely of captains convicted Appellant, a captain in the United States Coast Guard with more than twenty-seven years of service, of wrongful use of cocaine in violation of Article 112a, Uniform Code of Military Justice (UCMJ), 10 U.S.C. § 912a (2006). The court-martial panel had no flag officers1 because the convening authority categorically excluded all such officers from the member pool in violation of Article 26, UCMJ, 10 U.S.C. § 825. In addition, the military judge acknowledged that he had prior relationships, both professional and social, with a significant number of the court-martial participants, but he de-dined to disqualify himself from presiding over the trial.
We granted Appellant’s petition for review on the following two issues:
I. WHETHER THE GOVERNMENT CARRIED ITS BURDEN OF PROVING THAT THE CONVENING AUTHORITY’S CATEGORICAL EXCLUSION OF ALL FLAG OFFICERS WAS HARMLESS.
II. WHETHER THE MILITARY JUDGE ABUSED HIS DISCRETION IN DENYING CHALLENGES FROM BOTH PARTIES TO HIS IMPARTIALITY BASED ON PRIOR PERSONAL RELATIONSHIPS WITH INDIVIDUAL MILITARY COUNSEL, THE ACCUSED, TRIAL COUNSEL, SEVERAL MEMBERS, SEVERAL WITNESSES, AND THE STAFF JUDGE ADVOCATE.
Upon analyzing these issues, we conclude that under the particular circumstances of the instant ease, the convening authority’s exclusion of flag officers from the member pool was harmless. We further conclude that the military judge’s decision not to disqualify himself did not constitute an abuse of discretion. Accordingly, we hold that Appellant is not entitled to relief.
I. BACKGROUND
In June 2008, Appellant tested positive for cocaine pursuant to a random urinalysis. Subsequent tests of Appellant’s hair confirmed the presence of cocaine. A general court-martial was convened and at trial Appellant claimed that his positive drug test stemmed from his wife’s admitted use of cocaine in their household. Contrary to his plea, however, the panel convicted Appellant of the cocaine use offense2 and sentenced him to a fine of $5,000 and a reprimand, which the convening authority then approved. The acting Judge Advocate General [450] of the Coast Guard (TJAG) referred this case to the United States Coast Guard Court of Criminal Appeals (CCA) for review pursuant to Article 69(d), UCMJ, 10 U.S.C. § 869(d). The CCA affirmed the findings and sentence.
II. SELECTION OF MEMBERS
A.Facts
The panel in Appellant’s case was selected from a ten-person venire that was composed entirely of captains who had served for at least twenty-seven years in the Coast Guard. Because of the omission of flag officers from the member pool, Appellant moved to dismiss his case for a violation of Article 26, UCMJ.
The military judge denied the motion because he was not convinced that “the convening authority’s effort to pick officers who might actually be able to serve on the court [was] improper.” He based this conclusion on the following findings: (1) the convening authority had been advised of the Article 26, UCMJ, selection criteria at least six times in writing and twice verbally; (2) the convening authority had determined that the flag officers were not available based on his “personal experience” and “general knowledge” of flag officers’ duties and schedules; (3) the convening authority had not inquired “into the availability of any particular flag officer”; and (4) the convening authority had not attempted to “stack the court with post-continuation” captains,3 but instead “was motivated by a desire to select members who” were qualified and who were available to “actually serve on the panel.” The military judge also found that the convening authority “did riot categorically exclude all flag officers [from] consideration.”
On appeal the CCA concluded that the military judge clearly erred in finding that the convening authority had not categorically excluded flag officers from the venire panel, and further concluded that this exclusion violated Article 26, UCMJ. However, the CCA determined that the Government had established that this exclusion was harmless, and it otherwise adopted the military judge’s factual findings.
B. Standard of Review
We review “claims of error in the selection of members of courts-martial de novo as questions of law.” United States v. Bartlett, 66 M.J. 426, 427 (C.A.A.F.2008). We also conduct a de novo review to determine whether an error in member selection is harmless. See United States v. Ward, 74 M.J. 225, 227 (C.A.A.F.2015).
C. Discussion
The Government has not challenged the CCA’s holding that the convening authority’s categorical exclusion of flag officers from the member pool violated Article 25, UCMJ. See United States v. Kirkland, 53 M.J. 22, 24 (C.A.A.F.2000); United States v. Nixon, 33 M.J. 433, 435 (C.M.A.1991) (“Military grade by itself is not a permissible criterion for selection of court-martial members.”); see also Article 25(a), (d)(2), UCMJ. Appellant raises two theories for reversal because of this categorical exclusion: (1) the exclusion created an appearance of unfairness; and (2) the Government did not meet its burden of establishing the exclusion was harmless. We address each argument in turn.
First, there is no appearance of an unfair panel in this case. Although the convening authority deviated from the Article 25, UCMJ, criteria by categorically excluding flag officers from the venire panel, he provided Appellant with a venire of fellow senior captains who were fully qualified to sit on a court-martial panel. Indeed, we find no basis to conclude that the convening authority selected the members on any factors other than their “age, education, training, experience, length of service, and judicial temperament.” Article 25(d)(2), UCMJ. Further, the record provides no indication that these panel members failed to fully, carefully, and appropriately consider Appellant’s case in ar[451] riving at a verdict and sentence. Moreover, the convening authority’s motivation in ex-eluding flag officers from this case was not to stack the panel against Appellant. Father, the convening authority relied on his experience in concluding that the flag officers would not be available to actually sit on the panel and hear the case.4 United States v. Gooch, 69 M.J. 353, 358 (C.A.A.F.2011). Based on these circumstances, we conclude that there was no appearance of unfairness.
Second, the Government has met its burden of establishing that the categorical exclusion of flag officers was harmless. See Ward, 74 M.J. at 228 (noting Government has burden of showing Article 25, UCMJ, violation was harmless). As discussed above, the convening authority’s motivation in excluding the flag officers was based on his belief that they would be unavailable to actually serve on the court-martial. See Bartlett, 66 M.J. at 430 (evaluating convening authority?s motivation in determining harmlessness). Further, the selected members, all of whom were captains, met the Article 25, UCMJ, criteria. See id. (examining whether selected members met Article 25, UCMJ, criteria). Finally, the members’ actions in this case demonstrate that they were fair and unbiased. See Gooch, 69 M.J. at 361 (noting fairness and impartiality of members in evaluating for harmlessness). This point is underscored by the fact that the members stated that they would be impartial during voir dire; they were active participants throughout the trial who posed unbiased questions during the course of the trial; they deliberated over the course of three days before rendering a verdict, which included an acquittal of one charge; and they imposed a lenient sentence. In light of these factors, we conclude that the Government has met its burden of establishing that the categorical exclusion of flag officers was harmless.5
Because we find no reversible error with respect to the member selection issue, we next examine whether the military judge should have disqualified himself from presiding at Appellant’s trial because of his various connections to a number of the court-martial participants.
jjj MILITARY JUDGE
A. Facts
At the time of Appellant’s trial, the Coast Guard only had one military judge certified to preside over general courts-martial. This military judge served as the Chief Trial Judge of the Coast Guard, had attained the rank of captain, and had almost twenty-eight years of commissioned service in the Coast Guard.
As the military judge noted in his findings of fact, the Coast Guard is a “small service with a much smaller legal community. A large percentage of its commissioned officers, particularly at the more senior levels, attended the Coast Guard Academy.” Indeed, the tight-knit nature of the Coast Guard is reflected in the significant number of relationships that the military judge in the instant case had with various participants in the court-martial process, as reflected below.
First, the military judge knew Appellant and his wife. More than twenty years before trial, Appellant and the military judge were stationed at the same Coast Guard facility, and Appellant and his wife socialized with a group of junior officers that included the military judge. However, the military judge had not had any contact with Appellant or his wife for more than twenty years.
Second, the military judge supervised the individual military defense counsel (IMC) for [452] one year in 2002, which was seven years before Appellant’s trial. During this supervisory relationship, the military judge and the IMC had dinner at each other’s homes once each. The military judge and the IMC also had a few professional contacts regarding organizational or management issues subsequent to this supervisory relationship. It should also be noted that, after the IMC was detailed to the instant case, he sought to resume his prior status as a collateral duty special court-martial military judge in early 2009. However, although the military judge, as the chief trial judge, ordinarily would make recommendations about the special court-martial judges, he recused himself from the IMC’s request.
Third, the staff judge advocate (SJA) to the convening authority was serving as a collateral-duty special couit-martial military judge. As the chief trial judge in the Coast Guard, the military judge had “managerial oversight” of the SJA in the SJA’s capacity as a military judge. The military judge also knew of the SJA through conferences, trainings, and meetings.
Fourth, the military judge and trial counsel had professional contacts stemming from a different court-martial. The military judge described his professional relationship with trial counsel as “some very limited involvement in a contested members case.”
Fifth, the military judge also had a professional relationship with the senior assistant trial counsel (ATC) concerning the ATC’s role as Chief of the Office of Military Justice at Coast Guard Headquarters who had the primary responsibility for military justice policy. At the time of Appellant’s trial, this office was in the process of revising the Coast Guard’s military justice manual. The military judge had suggested changes to the manual, but he did not discuss. Appellant’s case with the ATC and instead directed his comments to the ATC’s deputy once he learned of the ATC’s role in this case.
Sixth, the military judge had “professional and work-related social contacts” with CAPT Kenney, a defense witness and the initial defense counsel, beginning in 2004. The military judge’s most frequent contacts with CAPT Kenney occurred between 2006 and 2008 when CAPT Kenney was a field SJA and the military judge was the Chief of the Office of Legal Policy & Program Development at Coast Guard Headquarters (LPD), the position that CAPT Kenney transferred to following the military judge’s departure. As the Chief of the LPD, the military judge’s job was to support the field SJAs, which meant he spent “a lot of time on the phone” with SJAs, including CAPT Kenney. The military judge also was in charge of assignments, which led to discussions with CAPT Kenney about the needs of the SJA office and CAPT Kenney’s own assignments. The military judge encouraged CAPT Kenney to replace him as the Chief of the LPD and made a recommendation to this effect. Since the parties did not inform the military judge about CAPT Kenney’s role as a fact witness in this case until late March 2009, the military judge’s professional contacts with CAPT Kenney lasted through February 2009 and concerned the selection of new collateral duty special court-martial military judges. However, the military judge and CAPT Kenney never discussed Appellant’s case.
Seventh, the military judge had relationships with other court-martial participants and potential witnesses that arose from the military judge’s attendance at the Coast Guard Academy in the late 1970s and early 1980s and/or from his professional duties during his lengthy service in the Coast Guard.
Eighth, the military judge’s direct supervisor was TJAG. The military judge never discussed particular eases with TJAG, including this ease. However, the military judge contacted the deputy judge advocate general (DJAG) during Appellant’s case so that DJAG would give TJAG “a heads-up” about being a potential witness for motions in this case. The military judge explained that his contact with DJAG was “[j]ust a courtesy” to notify TJAG about the situation. The military judge stated he would not have done this for another witness because he did not “work for any other witness.”
Ninth, certain individuals detailed to the original or amended member pools also knew [453] the military judge as a classmate at the Coast Guard Academy and/or through working relationships. One of these members stated that his prior association with the military judge would keep him from following the military judge’s instructions.6
Because of the members’ familiarity with him, the military judge stated that he understood “the government’s concern with getting members who [could] ... follow [his] instructions as they’re required to do.” To try to alleviate this concern and to help the Government assemble a panel, the military judge stated that he would “try to find a senior judge from another service.” Regarding this point, the military judge had the following exchange with the IMC:
IMC: If I may ask a question, sir. Maybe I just don’t get it, but why would you do that?
[Military Judge]: As a matter of convenience for the — essentially, I guess, the government, who has to produce a panel.
IMC: Because of the concern that they would not be able to produce enough people based on some of the arguments that came up here today, because of [the] relationship with you or [the] perceived relationship with you?
[Military Judge]: Whatever their concerns are — and you’ve articulated concerns too. Again, it would be a matter of convenience to say, you know what, we think, if you have this, then it makes ... our life easier.
The military judge later informed the parties that his inquiries for a replacement military judge ultimately “didn’t pan out” due to issues with “the motions practice, the posture and the timing.”
The Government, with Appellant’s concurrence, filed a “Motion for Recusal of the Military Judge.” The Government’s request was based on an appearance of bias stemming from the military judge’s relationships with various court-martial participants. Appellant agreed with the Government’s motion and, in a separate filing, noted that this appearance of bias was exacerbated by the fact that the military judge was in the same promotion zone as Appellant, this ease had high visibility, and TJAG was the military judge’s direct supervisor.
After an extensive proffer by the military judge and a colloquy between the military judge and the parties, the military judge denied the motion for disqualification. The military judge explained that his prior relationships with a number of the court-martial participants did not raise an appearance of bias because the “vast majority” of contacts occurred at routine work-related events and the social contacts were minimal and distant in time. He also stated that the issue of competing with Appellant for a promotion was “illusory,” and he noted that he had “more prior contacts with the [d]efense side” than with the Government side.
B. Standard of Review
Our review of a military judge’s disqualification decision is for an abuse of discretion. United States v. McIlwain, 66 M.J. 312, 314 (C.A.A.F.2008); United States v. Quintanilla, 56 M.J. 37, 77 (C.A.A.F.2001). A military judge’s ruling constitutes an abuse of discretion if it is “arbitrary, fanciful, clearly unreasonable or clearly erroneous,” not if this Court merely would reaeh a different conclusion. United States v. Brown, 72 M.J. 359, 362 (C.A.A.F.2013) (internal quotation marks and citation omitted).
Appellant does not claim that the military judge in his case was actually biased, only that the military judge’s presence raised an appearance of bias under Rule for Courts-Martial (R.C.M.) 902(a).7 We apply an objective standard for identifying an appearance of bias by asking whether a reasonable person knowing all the circumstances would conclude that the military judge’s impartiality might reasonably be questioned. Hasan, 71 M.J. at 418. Recusal based on an [454] appearance of bias “is intended to ‘promote public confidence in the integrity of the judicial process.’” Id. (quoting Liljeberg v. Health Servs. Acquisition Corp., 486 U.S. 847, 858 n. 7, 108 S.Ct. 2194, 100 L.Ed.2d 855 (1988)). However, this “appearance standard does not require judges to live in an environment sealed off from the outside world.” United States v. Butcher, 56 M.J. 87, 91 (C.A.A.F.2001). Although a military judge is to “broadly construe” the grounds for challenge, he should not leave the case “unnecessarily.” R.C.M. 902(d)(1) Discussion.
C. Oveniew
As can be seen by the facts recited above, the military judge had professional and/or social contacts with a significant number of the court-martial participants in this case. Under these circumstances it could fairly be argued that the military judge should have disqualified himself out of a sense of prudence.8 However, as also noted above, that is not the standard of review we are obligated to apply in deciding such cases on appeal. Rather, we are required to apply an abuse of. discretion standard in determining whether the military judge’s decision not to disqualify himself was error.
In analyzing this issue, we note at the outset the following points: the military judge fully disclosed his relationships with the participants in the court-martial; the record reveals no evidence of any actual bias on the part of the military judge, or of any other actions or rulings by the military judge that would independently raise appearance issues; and the military judge fully heard the views of both parties on this issue and then affirmatively stated on the record that he could remain impartial to both sides. Accordingly, under these particular circumstances we conclude that the military judge’s disqualification decision was not “arbitrary, fanciful, clearly unreasonable, or clearly erroneous.” Brown, 72 M.J. at 362 (internal quotation marks and citation omitted).
D. Discussion
We find no abuse of discretion in the military judge’s failure to disqualify himself for the following reasons. First, the military judge specifically stated on the record that none of his associations with court-martial participants would influence any of his decisions in Appellant’s case. See United States v. Wright, 52 M.J. 136, 141 (C.A.A.F.1999) (“[Djespite an objective standard, the judge’s statements concerning his intentions and the matters upon which he will rely are not irrelevant to the inquiry.”).
Second, Appellant has not identified any conduct by the military judge which tends to demonstrate that he inappropriately influenced the panel in this case. Indeed, the panel’s active participation, lengthy deliberations, and lenient sentence seem to underscore the point that they acted independently in this matter.
Third, although the military judge had to resolve a number of pretrial motions, Appellant has not pointed to any rulings that raise appearance concerns.
Fourth, we note that “[pjersonal relationships between members of the judiciary and witnesses or other participants in the court-martial process do not necessarily require disqualification.” Norfleet, 53 M.J. at 270. Further, “a former professional relationship is not per se disqualifying.” Wright, 52 M.J. at 141.
Here, the military judge was forthcoming and catalogued his relationships with the participants in the trial and subjected himself to voir dire on this subject. As the summary of these relationships outlined above demonstrates, most of the military judge’s contacts were professional and routine in nature. Further, although “a social relationship creates special concerns,” those relationships that had a social component occurred years prior to the court-martial and were not close or intimate. Cf. United States v. Sherrod, 26 M.J. 30, 31 & n. 2 (C.M.A.1988) (agreeing [455] with lower court that military judge was disqualified where victim was a close friend of the military judge’s thirteen-year-old daughter with whom the military judge had socialized); United States v. Berman, 28 M.J. 615, 618 (A.F.C.M.R.1989) (en banc) (finding intimate relationship between military judge and trial counsel in appellants’ courts-martial required disqualification). In regard to the military judge’s decision to notify DJAG that TJAG might by a witness for some motions in this case, although this step may have been ill-advised, we find an insufficient basis to conclude that it reasonably brought into question the military judge’s impartiality.
We note that in certain circumstances, the cumulative nature of a military judge’s relationships can create an appearance issue. See United States v. DeTemple, 162 F.3d 279, 287 (4th Cir.1998) (“[A] confluence of facts [may] create a reason for questioning a judge’s impartiality, even though none of those facts, in isolation, necessitates recu-sal.”); see also United States v. Amico, 486 F.3d 764, 776 (2d Cir.2007) (noting that recu-sal is warranted when “in the aggregate, the [circumstances of the case] would lead a disinterested observer to conclude that the appearance of partiality existed”). However, in the instant case the number and type of contacts that the military judge had with the participants in the court-martial appear to simply be the natural consequence of the military judge’s length of service in the relatively small Coast Guard, and we do not find a sufficient basis to conclude that a reasonable person familiar with all the circumstances in this case would conclude that the “military judge’s impartiality might reasonably be questioned.” R.C.M. 902(a); see DeTemple, 162 F.3d at 287 (‘“[0]ther things being equal, the more common a potentially biasing circumstance and the less easily avoidable it seems, the less that circumstance will appear to a knowledgeable observer as a sign of partiality.’” (quoting In re Allied-Signal Inc., 891 F.2d 967, 971 (1st Cir.1989))).
Appellant cites three circumstances of this case that, in his view, serve to increase the appearance of bias. Appellant first argues that the military judge and Appellant were both captains subject to promotion, and thus were in competition with one another for one of the coveted flag officer slots. However, the military judge “disclaimed” any potential conflict, and noted that as a judge advocate, he would not be in competition for the same promotion as Appellant who was not a judge advocate. We agree with the military judge that this potential promotion conflict was “illusory” and did not create an appearance of bias.
Appellant next contends that the parties’ joint request for disqualification demonstrates that the circumstances of the case raised an appearance of bias problem. We agree that the parties’ joint request did provide support for disqualification under R.C.M. 902(a) because a “disinterested observer would have noted that the government joined the [accused’s] motions for recusal — a very unusual development demonstrating that all parties were seriously concerned about the appearance of partiality.” Amico, 486 F.3d at 776. Indeed, we caution military judges to be especially circumspect in deciding whether to disqualify themselves in such instances. Nevertheless, after considering the circumstances surrounding the basis for the disqualification request in the instant case, we again do not find an adequate basis to conclude that the military judge abused his discretion when he decided not to disqualify himself.
Appellant finally argues that under Mcll-wain, the military judge’s statement about inquiring into the availability of a military judge from another military service is evidence that the military judge himself recognized that there was an appearance of bias. In Mcllwain, we found that the military judge abused her discretion in not disqualifying herself because she stated: “[H]er participation would suggest to an impartial person looking in that I can’t be impartial in this case.” 66 M.J. at 314 (internal quotation marks omitted). However, the military judge’s statements in this case about inquiring into the availability of a military judge from another armed service are distinguishable from those in Mcllwain. Specifically, [456] these statements were meant to address the Government’s concern about the efforts they would have to undertake to assemble an impartial member pool, which deals with' .an issue of member bias, not military judge bias. Further, unlike the military judge in Mcll-wain, the military judge in Appellant’s case specifically rejected the notion that there was an appearance problem:
[D]o I believe [the multiple relationships with court-martial participants] creates an appearance of bias or impartiality in favor or against the accused? No, I don’t. I mean obviously I would have disqualified myself if I did.
Thus the military judge’s statement regarding inquiring about military judge availability from other armed services does not conclusively raise any appearance of bias concerns.
We therefore conclude that under the circumstances of Appellant’s case, the military judge acted within his discretion in finding that his various relationships with court-martial participants did not constitute a basis for disqualification.
CONCLUSION
We conclude that neither the manner of the member selection nor the presence of the military judge in this case warrants reversal. The decision of the United States Coast Guard Court of Criminal Appeals is therefore affirmed.