State of Tennessee v. Johnny Mack Powell

CourtCourt of Criminal Appeals of Tennessee
DecidedJuly 7, 2026
DocketE2025-01126-CCA-R3-CD
StatusPublished
AuthorJudge Robert W. Wedemeyer

This text of State of Tennessee v. Johnny Mack Powell (State of Tennessee v. Johnny Mack Powell) is published on Counsel Stack Legal Research, covering Court of Criminal Appeals of Tennessee primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
State of Tennessee v. Johnny Mack Powell, (Tenn. Ct. App. 2026).

Opinion

07/07/2026 IN THE COURT OF CRIMINAL APPEALS OF TENNESSEE AT KNOXVILLE April 21, 2026 Session

STATE OF TENNESSEE v. JOHNNY MACK POWELL

Appeal from the Criminal Court for Knox County No. 113007 Scott Green, Judge

No. E2025-01126-CCA-R3-CD

A Knox County jury convicted the Defendant, Johnny Mack Powell, of one count of attempted voluntary manslaughter, three counts of aggravated assault, one count of possession of marijuana, one count of possession of drug paraphernalia, and one count of trespassing. The trial court merged the aggravated assault convictions and sentenced the Defendant, a Range II offender, to ten years of incarceration. On appeal, the Defendant contends that the evidence is insufficient to sustain his convictions for attempted voluntary manslaughter and aggravated assault because he was not the first aggressor and because he acted in self-defense. After review, we affirm the trial court’s judgments.

Tenn. R. App. P. 3 Appeal as of Right; Judgments of the Criminal Court Affirmed

ROBERT W. WEDEMEYER, PJ., delivered the opinion of the Court, in which TIMOTHY L. EASTER and JILL BARTEE AYERS, JJ., joined.

Joshua Hedrick, Knoxville, Tennessee, for the appellant, Johnny Mack Powell.

Jonathan Skrmetti, Attorney General and Reporter; Katherine C. Redding, Senior Assistant Attorney General; Charme P. Allen, District Attorney General; and Ta Kisha Fitzgerald and Robert Debusk, Assistant District Attorneys General, for the appellee, State of Tennessee.

OPINION I. Facts

This case arises from an altercation between the Defendant and Darron Blackwell, which occurred on January 28, 2018, in the Western Heights housing development in Knox County. For his role in the altercation, a Knox County grand jury indicted the Defendant for attempted first degree murder, three counts of unlawful possession of a firearm, aggravated assault by causing serious bodily injury, aggravated assault by causing bodily injury while using or displaying a deadly weapon, aggravated assault by causing reasonable fear of imminent bodily injury while using or displaying a deadly weapon, possession of marijuana, possession of drug paraphernalia, and trespassing. The trial court severed the Defendant’s three firearm charges before trial.

At the trial, the parties presented the following evidence: Stephanie Pinkston testified regarding the 911 recordings, which she kept as part of her business records working for Knox County 911. In those calls, the callers identify two black men fighting. One man, in a white shirt and jeans, later identified as the Defendant, was reported to be holding a gun to the back of the other man’s head. The other man, later identified as Mr. Blackwell, was wearing a dark hoodie. The Defendant told Mr. Blackwell he was going to “blow his f***ing head off” while pulling the trigger of his gun, but the gun did not discharge. The men went down a grassy embankment, lost their footing, and the Defendant abandoned the gun and pulled out a knife, which he used to slit Mr. Blackwell’s throat. The Defendant ran away, and Mr. Blackwell retrieved his own weapon from his person, and discharged it, firing toward the Defendant. After this, Mr. Blackwell got into a white SUV and left the scene. The Defendant went between the buildings and was no longer visible. One caller informed 911 that he had the weapon he had seen the Defendant hold to the back of Mr. Blackwell’s head. Another caller called to inform officers she had found a .40 caliber shell casing.

Jamie Mitchell said that on January 28, 2018, she was living in Western Heights and heard a confrontation outside her window that included a gunshot. She looked outside and saw the Defendant, who was wearing a white shirt, “bracing” Mr. Blackwell from behind. Mr. Blackwell was “struggling” and “trying to get away” from the Defendant. Mr. Blackwell appeared to be trying to get away from the Defendant who then grabbed something out of his pocket and “motioned” something across Mr. Blackwell’s throat. Mr. Blackwell grabbed his throat and got away and ran to a white vehicle, which sped away. The Defendant ran toward Ms. Mitchell’s building. Ms. Mitchell was describing the incident to 911 when she saw the Defendant come out of the building and run towards Virginia Street. She called to police officers who had arrived and told them about the incident and pointed to the Defendant, whom they arrested. Ms. Mitchell described the Defendant as the aggressor in the incident.

The final 911 call appears to be from the Defendant. He called 911 and said that Mr. Blackwell tried to rob him and then shot at him. He was unsure whether he was shot.

A video of the incident, recorded by a cell phone from another cell phone, which was not entirely clear, was played for the jury. It showed the Defendant and Mr. Blackwell wrapped in what appeared to be an embrace. The Defendant held a gun to the back of Mr. 2 Blackwell’s head. The men went down a grassy embankment and were then out of view. The Defendant ran back into camera view and away from the crime scene. Mr. Blackwell appeared to wave to a white SUV that was stopped in the road in the same direction Mr. Blackwell was traveling. The SUV appeared to stop and allow Mr. Blackwell to enter the vehicle.

During cross-examination, Ms. Mitchell agreed that she did not look outside until after she heard the gunshot. She was upstairs in her home and went downstairs to look outside, so there was a period of time when she was not actively looking outside. She maintained that she saw the Defendant grab something from his pocket and run it across Mr. Blackwell’s throat. Mr. Blackwell “broke away” and ran to the white SUV, which appeared to be waiting for him, and which then sped away. Ms. Mitchell said she only heard the one gunshot.

The parties stipulated to a document that was a Knoxville Community Development Corporation (“KCDC”) trespass notice to the Defendant. The parties agreed that this was served upon the Defendant before this incident.

Jason Culvahouse, a patrol officer with the Knoxville City Police Department (“KCPD”) responded to this incident, along with Officer Kevin Varner and a K-9 officer. After getting witness statements about two men fighting, one of whom was a tall black male in a white shirt, the officers cordoned off the area and located the Defendant. They took him into custody. A witness present, Garrick Jones, gave Officer Culvahouse a Ruger .22 pistol.

During further examination, Officer Culvahouse testified that officers also found a .40 caliber shell casing, which could not be fired from a Ruger .22 pistol. Officers did not recover any .22 caliber shell casings.

Stephanie Martinez, who knew the Defendant by his nickname “Country,” also witnessed this incident. She was walking in Western Heights when she saw a white vehicle arrive, and Mr. Blackwell1 “jumped out” and yelled “there’s the guy that robbed us.” Mr. Blackwell “ran up on” the Defendant, and the two started “tussling.” The Defendant grabbed Mr. Blackwell around his chest area and the two men struggled for a while. Then, the Defendant had a gun to the back of Mr. Blackwell’s head and was yelling “come get some of this gun” while the two men were walking down a steep incline. At the bottom of the hill, Mr. Blackwell appeared to be trying to pull out his gun when the Defendant “sliced his throat.” The Defendant then fled, and Mr. Blackwell fired a shot after him.

1 The witness referred to Mr. Blackwell by his alias “D. Parker.” 3 The same day as this incident, Ms. Martinez gave a statement to Investigator Mike Washam. Ms. Martinez further recounted that she found a gun after the incident on the sidewalk at the bottom of the hill. She gave the gun to her neighbor, Mr. Garrick Jones. Ms. Martinez said that the Defendant was the first person to brandish a weapon and that Mr.

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State of Tennessee v. Johnny Mack Powell, Counsel Stack Legal Research, https://law.counselstack.com/opinion/state-of-tennessee-v-johnny-mack-powell-tenncrimapp-2026.