OPINION
Samuel Tucker, Jr., was convicted by a jury of first-degree murder, pursuant to AS 11.41.100(a)(1), and second-degree murder, pursuant to AS 11.41.110(a)(1). Superior Court Judge Charles R. Tunley subsequently sentenced Tucker to consecutive terms of ninety-nine years and thirty years, giving him a total of 129 years.
FACTS
Two officers from the Nome Police Department, dispatched to the Tucker residence in the early morning of February 10, 1984, found the bodies of Samuel Tucker, Sr., and Joyce Tucker, the defendant’s father and mother. They had been dead for several hours. Samuel, Sr., had been stabbed once in the chest up to the hilt of the knife, and Joyce had been stabbed 22 times on the face, neck, and chest. There were also cuts on Joyce’s hands, which were apparently inflicted when she attempted to ward off her assailant.
Samuel Tucker, Jr., (hereinafter Tucker) was implicated in the murders. A bite-mark found on Joyce’s left forearm matched impressions of Tucker’s teeth, and a strand of Tucker’s hair was found clutched in Joyce’s left hand. A shirt Tucker wore earlier in the evening was found stained with Joyce’s blood. An imprint of fabric on the shirt was consistent with the fabric of Joyce’s sweater. Bloodstained pants were seized from Tucker. The blood on the pants was a mixture of Samuel, Sr.’s, and Joyce’s blood. Tucker’s underwear was also found to have Samuel, Sr.’s, blood on it.
Tucker had been drinking from 3:00 p.m. on February 9 to 1:00 a.m. on February 10. He was with his friend, Gerald Nashalook, until 9:00 p.m. At that time, Nashalook’s mother asked Tucker to leave the Nasha-look house because he had gotten into a fist fight with Nashalook. Tucker was seen at various bars in Nome from 10:15 until 1:00 a.m., when he returned home and reported the murders to the police.
At trial, Nashalook testified that, later that night, Nashalook and Tucker met at a bar, and Tucker said something about Tucker’s parents. Nashalook could not remember what Tucker said, but he did recall that he could not believe it. Nashalook also testified that he and Tucker decided to go to the Tucker residence. Once there, they kicked down the door to enter. At trial, Nashalook could not remember what he had seen there, but he recalled that he realized that what Tucker had told him earlier was true. Nashalook also remembered throwing a bottle against the shower stall and suggesting that they leave and worry about it later. He testified that they subsequently left and parted company.
DISCUSSION
Tucker argues that the trial court erred in denying his motion for a bifurcated trial to separate the alternative defenses of alibi and diminished capacity. He invites us to extend the rule of
Houston v. State,
On the facts of this case, however, where the diminished capacity defense is based exclusively on voluntary intoxication and where evidence of intoxication would be relevant and admissible in proving both defenses, we conclude bifurcation is not required.
See Paul v. State,
Tucker next argues that the trial court erred in permitting Nashalook to testify. Nashalook had previously claimed to remember nothing about the events of the evening. Tucker asserts that Nashalook subsequently “remembered” only after being threatened by the police with prosecution for the crimes if he failed to remember and after discussing the night’s events with his friends, with whom he had been that evening. Based on Nashalook’s lack of memory, Tucker argues that Nashalook was not a competent witness.
Alaska Rule of Evidence 602 governs witnesses’ capacity to testify:
A witness may not testify to a matter unless evidence is introduced sufficient to support a finding that he has personal knowledge of the matter. Evidence to prove personal knowledge may, but need not, consist of the testimony of the witness himself.
The Commentary for A.R.E. 602 states:
As long as there is some evidence that the witness has personal knowledge, the court must let the jury decide whether or not the witness is really knowledgeable. If the jury believes that the witness has no personal knowledge, it will disregard his testimony. The court may reject testimony of a witness if it finds that no trier of fact could reasonably believe that the witness has personal knowledge of the matter.
The fact that a witness may not have perfect recall about an event is no reason to exclude his testimony. Defects in a witness’ recollection are proper subjects for cross-examination and impeachment, but the defects do not generally render the witness’ testimony inadmissible.
United States v. Lena,
We caution, however, that police coercion and intimidation of witnesses is improper.
See Webb v. Texas,
We do not find reversal to be required in this case, however, because Tucker was able to fully cross-examine Nasha-look concerning his defective memory and to apprise the jury fully of the coercive tactics used by the police. The jury was thus capable of making a fully informed decision whether to reject Nashalook’s testimony on that basis. More significantly, *643 Nashalook’s testimony was merely cumulative of other evidence presented. Because the same facts were elicited from Nasha-look’s companions or were indicated by the physical evidence found at the Tucker residence, Tucker was not harmed substantially by admission of Nashalook’s testimony.
Finally, Tucker appeals his sentence. He first complains that Judge Tun-ley did not appropriately apply the
Chaney
criteria. Specifically, Tucker complains that Judge Tunley underemphasized the sentencing goal of rehabilitation. In imposing sentence, a sentencing judge must consider the following goals: community condemnation, general and specific deterrence, isolation of the offender from society, and rehabilitation.
State v. Chaney,
Judge Tunley considered all the Chaney criteria but apparently found rehabilitation unlikely. This conclusion is supported by the fact that Tucker had previously committed numerous alcohol-related offenses, including two that were violent in nature, and by the fact that he had previously been incarcerated, put on probation, and sent to alcohol counseling. In spite of this, Tucker continued to drink. We find that Judge Tunley was not clearly mistaken in failing to assign a more prominent role to the sentencing goal of rehabilitation.
Tucker next complains that Judge Tunley erroneously imposed the maximum sentence for first-degree murder. Maximum sentences are appropriate where the defendant can be characterized as a worst offender.
Hintz v. State,
While a defendant’s background should be considered along with the nature of the crime in determining whether the defendant is a worst offender, imposition of a maximum sentence does not require a finding that the defendant is a worst offender both in terms of his background and the nature of the specific offenses charged.
Bom v. State,
In the present case, contrary to Tucker’s claim, Judge Tunley emphasized both the nature of the crime and Tucker’s background. He noted that Tucker was an alcoholic
1
and noted the numerous other crimes, including the assault, that Tucker had previously committed. He also noted Tucker’s youthfulness, his education, and his employment background. Because both the nature of the crime and Tucker’s background were considered in making the finding that Tucker was a worst offender, Judge Tunley’s determination was not clearly mistaken.
See Nukapigak v. State,
Tucker also complains that the thirty-year sentence for second-degree murder is excessive. The benchmark prescribed for second-degree murder is twenty to thirty years.
Page v. State,
Tucker further argues that Judge Tunley erroneously made the two sentences consecutive. Consecutive sentences ordinarily should not exceed the maximum sentence for a single count without a finding that confinement for the combined term is necessary to protect the public.
Mutschler v. State,
I further find that society must be protected from the defendant. That when he drinks, he’s dangerous. And he knew from that previous confrontation with his mother with the gun in January of 1978, he continued living there. He continued drinking heavily. Almost foreseeing the senseless and terrible murder of his mother and of his father. The public must be protected from the defendant. As I stated previously, there is no known cure for alcohol.
It can also be inferred from Tucker’s record of alcohol-related assaultive conduct — for example, when he previously shot at his mother and police officers and threatened his sisters — that Tucker must be isolated to protect the public.
See Neal v. State,
One aspect of Tucker’s consecutive sentence remains to be considered. In
State v. Andrews,
*645 The judgment of the superior court is AFFIRMED, and the sentence is REMANDED for proceedings consistent with this opinion.
Notes
. Although evidence of alcoholism and voluntary consumption of alcohol cannot be considered by a sentencing court as an aggravating or mitigating factor in and of itself,
see
AS 12.55.155(g), such evidence may be considered to the extent that it reflects on a defendant’s prospects for rehabilitation.
See State
v.
Ahwinona,
