Convicted after a jury trial of voluntary manslaughter while armed and related weapons offenses, appellant Byron R. Dorsey asserts that the trial court committed reversible error in several of its rulings. We disagree and affirm appellant’s convictions.
Appellant was charged with killing Andre Wilson inside his home at 1333 Congress Street, S.E. The prosecution presented evidence that appellant and his brother, Christopher Herron, went to that residence in order to sell marijuana to some of its other occupants. After their arrival, Wilson confronted them and ordered them to leave. A scuffle ensued, during which appellant fired the shots that killed Wilson.
Appellant did not testify at trial. The primary theme of his defense was misiden-tification: his counsel challenged the prosecution witnesses and denied that appellant was at the scene of the shooting. At the conclusion of the trial, however, appellant requested jury instructions on self-defense and defense of a third party, based on evidence adduced in the prosecution case that Wilson was the aggressor.
1.
Denial of Instructions on Self-Defense and Defense of a Third Person.
Appellant argues that the trial court erred by refusing to instinct the jury on self-defense and defense of a third person. We are not persuaded. While a defendant is entitled to an instruction on a theory of defense so long as there is some evidence (“however weak”) to support it,
see, e.g., Hernandez v. United States,
Viewed in the light most favorable to appellant, the testimony established that Andre Wilson was the initial aggressor and that appellant responded with lethal force. When Herron and appellant did not instantly obey his order to leave the house, Wilson grabbed Herron, stating “what you ain’t understand me? what, you ain’t hear me? y’all got to go.” Appellant said they were ready to go and headed for the door, but Wilson continued to grab Herron by his shirt and hold him, preventing him from leaving. Wilson, who him *292 self was unarmed, observed that Herron had a handgun and the two men wrestled for control of it; at least one witness saw Wilson get his hands on the gun. 2 Witnesses described both Herron and appellant as appearing scared. Appellant pulled out his gun — possibly after Wilson told his Mend Bobby Capíes to check if appellant was armed — and warned Wilson to let go of his brother, but Wilson ignored the warning. Capíes, who also was unarmed, smacked appellant’s hand, apparently trying to knock the gun away. Appellant maintained control of the gun, however. He fell back or withdrew into the corner of the room, and then opened Me, shooting both Capíes and Wilson. According to the autopsy report, Wilson sustained a total of eight bullet wounds, which caused his death.
Appellant argues that in this “rapidly evolving situation,” he “could have reasonably believed that his life and the life of his brother [were] in imminent danger. Wilson had his hand on [appellant’s] brother’s gun, and was ignoring [appellant’s] pleas to let go. When Capíes lunged at him, [appellant] could have reasonably ... believed that he was about to be overpowered, and that he and his brother would be shot by Wilson.” Thus, appellant concludes, there was “at least some evidence” sufficient to entitle him to instructions on self-defense and defense of a third person. Id.
We are persuaded, however, as a matter of law, that the situation confronting appellant was not dire enough to justify his killing Wilson. Wilson was not armed; he had uttered no threats; he did not obtain control of Herron’s weapon or point it at Herron or appellant; and he had not inflicted any serious injury on Herron. 3 The same can be said of Capíes with respect to his interaction with appellant. The evidence therefore did not show that appellant or his brother were in imminent peril of death or serious bodily harm, such that appellant reasonably could think a lethal response necessary, 4 even though Wilson was the initial aggressor and he was struggling to disarm Herron.
In coming to that judgment, we find
Fersner
especially instructive. In that case, the defendant Fersner struck the decedent Winslow in the head with a hatchet in order to save a third person, Reed, from a vicious beating. We acknowledged that Fersner reasonably believed that Reed was in imminent danger of serious bodily harm from Winslow, who was kicking and stomping her and threatening to break her neck. Nonetheless, we upheld the trial court’s refusal to give an instruction on the use of deadly force in defense of a third person, because Fersner “did not have ‘reasonable grounds to believe’ — even if acting ‘in the heat of passion’ — that hatchet blows to Winslow’s head were necessary to defend Reed.”
[e]ven if appellant [Fersner] was entitled to use deadly force — ie., force “likely to cause death or serious bodily harm”— there are, as this definition implies, de *293 grees of deadly force. On some occasions, it may be reasonable only to cause serious bodily harm not threatening life itself. This is such a case. Under the circumstances here, appellant obviously could have saved Reed by striking Win-slow with the blunt side of the hatchet elsewhere on the body, with less damaging (here fatal) results. As a matter of law, therefore, appellant used excessive force; it was not necessary for appellant to use an amount of deadly force that was likely to kill Winslow.
Id. Fersner teaches that a defender may not use force “likely to kill” unless it is reasonable for him to think that such lethal force is truly necessary. That is a high standard, which reflects the sanctity of life. It is a standard that appellant did not meet. He had less drastic options after Capies failed to dislodge the gun from his hand; he did not have to shoot to kill. “As a matter of law, therefore, appellant used excessive force,” id, and we hold that he was not entitled to instructions on self-defense or defense of a third person.
2.
Denial of Mistrial After Jury Was Informed of Appellant’s Prior Convictions.
Appellant argues that the trial court abused its discretion,
see Martin v. United States,
Improper references to a defendant’s past criminal conduct do not necessarily require the court to grant a mistrial, however.
See, e.g., Goins v. United States,
The relevant factors persuade us that the court did not err in denying a mistrial in the circumstances of this case. Unlike in other cases that have posed similar issues, no actual evidence of appellant’s phior convictions was presented in this case. The references to those convictions appeared only in the court’s reading of the indictment and the prosecutor’s opening statement. Those references were brief, non-specific, and not linked to the central issue at trial, which was appellant’s identification as the perpetrator. The government’s proof of appellant’s identification was strong and unrefuted. And the trial court instructed the jury that the mention of appellant’s prior convictions in the indictment was not evidence; that the jury had heard no evidence of any prior convictions; that the jury was to decide the case solely on the evidence and the court’s in
*294
structions; and, finally, that “[s]ince there has been no evidence on the issue, I instruct you that you are not to speculate on this issue and that you should disregard my previous statement about this issue.” It would have been better' had the court given such a curative instruction immediately after the jury was told that appellant had prior convictions, rather than at the close of trial.
See Coleman,
3. Determination of Witness’s Competency Without an Independent Medical Examination. Upon reviewing the medical records of prosecution witness Arlisa Carter, who had been diagnosed with paranoid schizophrenia, and recently hospitalized for psychiatric problems, appellant moved to exclude her as a witness unless an independent medical examination (IME) established her competency.. A competency hearing was held, at which Carter testified, but the court denied appellant’s request for an IME and permitted the witness to testify. Appellant argues that the court erred in finding Carter competent without an IME. We do not agree.
“In assessing the competency of a witness, a trial judge must evaluate the [witness’s] ability to accurately perceive, recall, and relate purported facts, as well as testify truthfully. A trial judge has broad discretion, and a ruling in this regard should not be disturbed unless plainly deficient.”
Vereen v. United States,
Whether to order an IME to assist the court in determining a witness’s competency to testify is likewise “a matter within the trial judge’s sound discretion.”
Mitchell,
The trial court’s impressions of Carter — that she was obstreperous and hostile, particularly toward the defense, but nonetheless competent — seem to us
*295
accurate, not defective. As noted, Carter did not display the kinds of mental impairments that would suggest testimonial incapacity. To be sure, she provided ammunition for challenging her ability to recall and to tell the truth; for example, she often claimed that her memory was gone and at one point asserted that she did not know if she was lying or not. Those responses, however, evidenced Carter’s plain unwillingness to cooperate with defense counsel rather than a lack of competency on her part; certainly, the trial court could so conclude. Competency “concerns certain basic, prerequisite capabilities necessary to give testimony,” and thus is not to be confused with witness credibility or cooperativeness.
Vereen,
4.
Admission of Appellant’s Rap Lyrics.
Appellant asserts that the trial court abused its discretion by admitting his handwritten rap lyrics, which seemingly implicated their author in drug dealing. Although the lyrics were probative of appellant’s identity as the shooter,
5
see Drew, 118
U.S.App.D.C. at 16,
Appellant’s convictions are hereby affirmed.
Notes
. We view the evidence in the light most favorable to the defendant.
Hernandez,
. Wilson reportedly was upset that Herron had brought a "joint” into a house where there were children, asked what Herron was "reaching for," and expressed fear that Her-ron was going to shoot him.
. Herron did sustain a gunshot wound, but it was apparently from appellant’s weapon; there is no evidence that it was inflicted by Wilson or anyone else.
.Because appellant did not testify, there also is no direct evidence in the record as to what he honestly believed. It matters not, however, whether appellant honestly believed in the need to use deadly force, if his use of deadly force was objectively unreasonable.
. Prosecution witnesses said that the man who shot Wilson was called “B,” arrived on the scene in a burgundy four-door car, and sold marijuana. The rap lyrics indicated that appellant, their putative author, identified himself as "B,” drove an Oldsmobile, and dealt drugs. Other evidence corroborated those inferences and established that appellant had driven a burgundy Oldsmobile (which he repainted shortly after the shooting).
