The defendant was convicted, after a Superior Court jury trial, on two indictments for masked armed robbery and was sentenced to two consecutive ten-year terms at the Massachusetts Correctional Institution at Concord. He filed a motion for a new trial and a motion to correct sentence, Mass. R. Crim. P. 30 (a), (b), 378 Mass 900 (1979), both of which were denied by the trial judge. The defendant appeals the denial of his motion for a new trial; the question presented by the motion to correct sentence has been reported by the judge. 1 We transferred the case to this court on our own motion. We affirm the judge’s rulings.
The evidence at trial showed that on February 24,1979, at approximately 8 p.m., a man wearing a mask and carrying a pistol entered a Cumberland Farms store. Two employees, Lorie Lawrence and James Westbury, were in the store at the time, standing behind the counter. The man pointed the pistol at them and demanded money. Westbury, who worked the gasoline pumps located outside the store, gave him the money he had in his pocket from selling gasoline. Lawrence took the money that was in the cash register and gave it to the man, who then ran out of the store. All the money taken belonged to Cumberland Farms.
The sole issue at trial was the identity of the robber. Lawrence, who had seen the defendant on prior occasions and knew him by name, told Westbury, and later the police, that she thought the defendant was the person who had robbed the store. At the police station she was shown an array of photographs, and she selected the defendant’s picture from among them. Westbury did not know the defendant, and when shown the same photographs, he failed to select the defendant’s picture. The police then showed Westbury a photograph of the defendant and told him that Lawrence had picked out this photograph as depicting the man who robbed them. Westbury was still unable to make a positive identifi *347 cation. Later, however, when Lawrence and Westbury were at the Uxbridge District Court waiting for the probable cause hearing, Lawrence asked Westbury if he could pick out the man who robbed the store from the fifteen or twenty other people in the room. Westbury then identified the defendant as the man who had robbed them. At the probable cause hearing itself, and also at trial, Westbury again identified the defendant as the robber. The defendant’s trial counsel did not move to suppress the evidence of Westbury’s identification of the defendant, and failed to object to its admission at trial or to request limiting instructions.
1. Motion to correct sentence. The defendant was convicted and sentenced on two indictments of masked armed robbery — one for robbery from the person of Westbury, and one for robbery from the person of Lawrence. The defendant contends that there was but one robbery, and that it was therefore error for the judge to impose two separate and consecutive sentences. He argues that where, as here, property belonging to a single entity is taken by force or violence from more than one person in the course of a single incident, only one “robbery” has occurred, and thus only one sentence may be imposed.
The double jeopardy clause of the Fifth Amendment to the United States Constitution, applicable to the States through the Fourteenth Amendment, prohibits punishing a person twice for the same offense.
North Carolina
v.
Pearce,
It is noteworthy that the armed robbery statute, G. L. c. 265, § 17, is found under the chapter of the General Laws entitled “Crimes against the Person,” rather than under the chapter (c. 266) entitled “Crimes against Property.” In addition, the Legislature has not imposed different statutory penalties for robbery according to the value of the property taken, as it has with respect to the crime of larceny (see G. L. c. 266, § 30), thus suggesting that it was not so much concerned with the larceny aspect of the crime of robbery as with its assault aspect.
In construing the armed robbery statute, this court has previously stressed the assault aspect of the crime. In
Commonwealth
v.
Weiner,
The defendant argues that
Commonwealth
v.
Stewart,
We are not persuaded by those cases that have reached a conclusion contrary to the one we reach here. See
People
v.
*350
Nicks,
In light of the emphasis that the General Court and this court have placed on the assault element of the crime of rob
*351
bery, we conclude that the “offense” is against the person assaulted, and not against the entity that owns or possesses the property taken. See
Barringer
v.
United
States,
2.
Motion for a new trial.
The defendant’s motion for a new trial is based upon the contention that the Uve identification testimony of the victim Westbury was the product of an impermissibly suggestive photographic confrontation, and was therefore excludable. See, e.g.,
Commonwealth
v.
Storey,
When ineffective assistance of counsel is alleged, the general standard used by this court is “whether there has been serious incompetency, inefficiency, or inattention of counsel — behavior of counsel falling measurably below that which might be expected from an ordinary fallible lawyer — and, if that is found, then typically, whether it has likely deprived the defendant of an otherwise available, substantial ground of defence.”
Commonwealth
v.
Saferian,
The defendant has not shown that trial counsel failed to inform himself of the circumstances surrounding the identification . The defendant has the burden of proving this fact. See
Commonwealth
v.
Brown,
The judge concluded that trial counsel failed to exclude the identification evidence for tactical reasons. This conclusion we are bound to accept, since it also was based largely on the affidavit of trial counsel.
Commonwealth
v.
Bernier, supra.
This does not, however, end our inquiry.
Commonwealth
v.
Williams,
In the circumstances of this case, we do not think that trial counsel’s strategy was “manifestly unreasonable.”
Commonwealth
v.
Adams, supra
at 728. No alibi defense was available,
6
and the defendant was faced at trial with the
*354
prospect of attempting to impeach the relatively strong identification testimony of Lawrence. According to trial counsel’s affidavit, he decided not to attempt suppression of Westbury’s identification testimony, but instead to attack the testimony on cross-examination. He hoped to exploit the weaknesses of Westbury’s testimony, so that the damage done to Westbury’s credibility would spill over to and thereby weaken the more powerful identification testimony of Lawrence. It was within the discretion of the judge to believe these statements. We note that trial counsel conducted an extensive cross-examination of Westbury, with appropriate comment during final argument on the weaknesses of his identification testimony. In these circumstances trial counsel’s decision not to attempt to suppress the identification evidence was not unreasonable.
Commonwealth
v.
Underwood,
Our conclusion that trial counsel’s strategy was reasonable compels us to reject the defendant’s suggestion that the trial judge should have ordered sua sponte a voir dire to determine whether the identification was impermissibly suggestive. Assuming it would have been error to admit the identification evidence over the defendant’s objection, the judge nevertheless could not be expected to abdicate his traditional position of impartiality and interject himself into the trial in the manner of cocounsel for the defendant.
Commonwealth
v.
Underwood, supra
at 511. This is especially so where, as here, the failure to assert constitutional rights may fairly be interpreted by the trial judge as a deliberate and reasonable tactical decision by trial counsel. The
*355
burden of informing the judge and subsequent courts of review of alleged errors in the admission of evidence must necessarily rest upon trial counsel. Only where there is a “substantial risk of a miscarriage of justice” will we disregard this rule.
Commonwealth
v.
Harris,
We affirm the order denying the motion for a new trial and the order denying the motion to correct sentence.
So ordered.
Notes
The judge purported to report the question pursuant to Mass. R. Civ. P. 64,
General Laws c. 265, § 17, as appearing in St. 1952, c. 406, § 1, states in pertinent part: “Whoever, being armed with a dangerous weapon, as *348 saults another and robs, steals or takes from his person money or other property which may be the subject of larceny shall be punished by imprisonment in the state prison for life or for any term of years . . . .”
General Laws c. 277, § 39, as amended through St. 1980, c. 459, § 8, defines robbery as “[t]he taking and carrying away of personal property of another from his person and against his will, by force and violence, or by assault and putting in fear, with intent to steal.”
More recently, this court has disapproved the practice of finding harmless error where concurrent sentences were imposed.
Commonwealth
v.
Jones,
Because of the alternate holdings in
Commonwealth
v.
Berryman,
The same evidence test inquires “whether each crime requires proof of an additional fact that the other does not.”
Commonwealth
v.
Jones,
The United States Supreme Court has not established a clearest for measuring the effectiveness of criminal trial attorneys for Sixth and Fourteenth Amendment purposes. The Courts of Appeals have fashioned divergent standards. See generally
Commonwealth
v.
Rondeau,
In addition to the claim involving the failure to suppress the identification testimony, the defendant’s motion for a new trial also alleged that *354 trial counsel had failed to explore an alibi defense, thereby depriving him of effective assistance of counsel. The affidavit of trial counsel stated, and the judge found, that counsel was never made aware of the alleged alibi and therefore had no cause to investigate it, and, further, that even if he had been made aware of the possibility, trial counsel could reasonably fear that the alibi’s transparency would alienate the jury. The defendant does not challenge these conclusions here.
