On August 19, 2008, a jury convicted the defendant of the illegal carrying of a firearm, in violation of G. L. c. 269, § 10
(a),
and the unlawful carrying of a loaded firearm, in violation of G. L. c. 269, § 10 (n).
1
On appeal, the defendant argues that (1) the motion judge erred in denying his motion to suppress the loaded firearm; (2) the trial judge’s admission in evidence of a ballistic expert’s certificate of examination regarding the firearm and ammunition violated his right to confrontation as set forth in
Melendez-Diaz
v.
Massachusetts,
1. The motion to suppress, a. Facts. We summarize the facts concerning the stop of the defendant and the seizure of the firearm as found by the motion judge, supplemented where *240 necessary with uncontroverted evidence drawn from the record of the suppression hearing. 3
On the evening of July 24, 2007, State Troopers Anthony Watson and Mark Cyr, together with Federal Bureau of Investigation (FBI) Special Agent Michael Doyle, were assigned to duty in New Bedford as members of a joint State police-FBI gang task force. At approximately 9:46 p.m., while they were near the United Front housing project, they heard a broadcast of a police officer’s request for an ambulance to treat the victim of a shooting that had just occurred in the immediate vicinity. Immediately thereafter, a State police dispatcher broadcast a report that a white or Hispanic male wearing a white T-shirt and blue shorts had been seen running down Chancery Street, near where the shooting had occurred.
The information regarding the person fleeing the scene came from an anonymous caller to an emergency 911 line. She told police that she was “on Middle Street” and had heard two to three shots on Chancery Street, in her “back yard.” She had not seen the shooting, but she had seen a person running toward Kempton Street after the shooting. She described the fleeing person as a “tan” colored “kid”; she said he was wearing a white shirt, blue “jean” shorts, and a hat.
Traveling in an unmarked police cruiser, the three officers searched for the suspected shooter in the streets immediately surrounding the housing project. The officers stopped two men wearing white T-shirts and blue shorts, each at different locations, but quickly determined that neither had been involved in the shooting. As the officers drove down Union Street, Trooper Cyr observed a third person on Emerson Street wearing a white T-shirt and dark shorts, within two to three blocks of the scene of the reported shooting. The officers drove south on Emerson Street, stopped their cruiser in the middle of the street near the defendant, and left the vehicle to approach the defendant. The defendant, who had been heading south on a sidewalk on Emerson Street, pedaling a foot scooter, reversed direction and began *241 traveling north on Emerson Street, away from the approaching officers.
The officers were dressed in dark T-shirts marked with the words “Gang Unit” on the back, blue jeans, and sneakers. Trooper Watson and Trooper Cyr’s T-shirts both bore clearly marked State police emblems on the front; Special Agent Doyle’s T-shirt was marked “FBI” on the front. All three wore gun belts that held firearms, police radios, and handcuffs. Trooper Watson and Trooper Cyr also displayed their State police badges on their belts.
As they advanced toward the defendant, Trooper Watson said to him, in substance, in a “normal voice,” “Can I talk to you? Can you come over here?” The defendant stopped, looked over his shoulder at Trooper Watson, and made quick motions with his hands in the area of his waistband. The officers then heard an object hit the ground with the sound of “[mjetal on pavement,” and Trooper Watson immediately seized the defendant’s hands and drew the defendant toward him and away from the object the defendant had dropped. Using a flashlight, Special Agent Doyle located the object and called out that the defendant had dropped a gun. Trooper Watson and Trooper Cyr handcuffed the defendant, placed him under arrest, and advised him of his Miranda rights.
b.
Discussion.
In reviewing the denial of a motion to suppress, we accept the judge’s findings of fact absent clear error.
Commonwealth
v.
Alvarado,
The defendant argues that he was seized (or stopped in the constitutional sense) by the police once Trooper Watson asked to speak with him and that, at that moment, the police did not have reasonable suspicion to justify the stop. The Commonwealth contends that the stop did not occur until Trooper Watson grabbed the defendant’s hands after hearing the metallic clang of a dropped firearm.
The police do not seize a person whenever they seek to question him.
Commonwealth
v.
Stoute,
The question remains whether the Commonwealth has met its burden of establishing that, at the time Trooper Watson called to the defendant, the stop was justified by reasonable suspicion, based on specific and articulable facts, that the defendant had committed, was committing, or was about to commit a crime. See
Commonwealth
v.
DePeiza,
*243
When police officers on the street stop a defendant in reliance on a police dispatch alone, the stop is lawful only if the Commonwealth establishes both that the information on which the dispatch was based had sufficient indicia of reliability, and that the description of the suspect conveyed by the dispatch had sufficient particularity that it was reasonable for the police to suspect a person matching that description. See
Commonwealth
v.
Lopes,
The tape recording of the 911 call was in evidence at the motion to suppress hearing and was reviewed by the motion judge. From our own review of the recording, we conclude that the judge did not err in finding that the information provided by the caller was based on her personal observation. The caller reported that she heard gunshots, looked out into the back yard, and saw the individual she described fleeing the scene of the shooting. An eyewitness’s report to police of her recent, firsthand observation satisfies the basis of knowledge prong. See
Commonwealth
v.
Alfonso A.,
As to the veracity test, our case law assigns greater reliability to an eyewitness whose identity is known to police than to one who is anonymous. See
Commonwealth
v.
Costa,
Corroboration, however, is not the only way the Commonwealth can establish the reliability of an anonymous caller. Under our common law of evidence, we have recognized that a statement may be sufficiently reliable to be admitted in evidence as an exception to the hearsay rule where it is made in reaction to a startling or shocking event if its utterance was “spontaneous to a degree which reasonably negated premeditation or possible fabrication and if it [tends] to qualify, characterize and explain the underlying event.”
Commonwealth
v.
DiMonte,
We need not decide whether this anonymous declarant’s telephone call to the police would be admissible in evidence at trial as an excited utterance (or whether its admission in that context would satisfy the confrontation clause of the Sixth Amendment to the United States Constitution, see
Commonwealth
v.
Burgess,
The fact that the caller’s report satisfies both the basis of knowledge test and the veracity test means that the information transmitted by the dispatcher to the officers bore sufficient indicia of reliability that the officers were entitled to rely on the dispatch in conducting their investigation. It does not necessarily mean, however, that the description of the suspect transmitted by the police dispatcher was sufficiently detailed and particularized that it was reasonable for the police to stop any person matching that description. See
Commonwealth
v.
Lopes,
There are three accompanying circumstances that must be considered together with the dispatcher’s description in determining whether the police had reasonable suspicion to stop the defendant. See
Commonwealth
v.
Mercado,
Second, when the officers approached the defendant, before Trooper Watson called out to him, the defendant reversed direction and began to move away from the officers. See
Commonwealth
v.
Stoute,
Third, the officers were looking for someone who may have shot another person a few blocks away approximately ten minutes earlier. The gravity of the crime and the present danger of the circumstances may be considered in the reasonable suspicion calculus. See
Commonwealth
v.
Lopes, supra
at 157-159 (report that van had been involved in homicide may be considered in evaluating whether police had reasonable suspicion to stop van meeting dispatcher’s description);
Commonwealth
v.
Campbell,
We conclude that the police had reasonable suspicion to justify an investigatory stop of the defendant. Physical proximity, closeness in time, the defendant’s obvious effort to avoid encountering the police, and the danger to public safety supplemented the less than distinctive physical description relayed in the police dispatch. Taking these elements together, we conclude that, at the time of the Terry stop, the police officers had a reasonable suspicion that the defendant had been involved in the shooting. See Commonwealth v. Mercado, supra; Commonwealth v. Doocey, supra. Because the stop was lawful, the defendant’s motion to suppress the handgun recovered by the police after the stop was properly denied.
2. Admission of ballistics certificate. At trial, the Commonwealth offered in evidence a certificate of examination signed by Trooper John H. Conroy, III, of the State police firearms identification section, in which he attested that the revolver and live cartridges submitted to him were, respectively, a firearm and ammunition as defined in G. L. c. 140, § 121. 6 The certification was offered through the testimony of Sergeant Troy C. Spirlet of the New Bedford police department, the commander *248 of its firearms division; Trooper Conroy did not testify at trial. Defense counsel objected to the admission of the certificate, but the objection was overruled and the certificate was admitted in evidence.
Following the defendant’s conviction, the United States Supreme Court in
Melendez-Diaz
v.
Massachusetts,
Because the defendant objected to the admission of the certificate and because its admission over objection constituted constitutional error, we must now determine whether the erroneous admission of the certificate was “harmless beyond a reasonable doubt.”
Chapman
v.
California,
At trial, Trooper Cyr testified that, after the officers’ arrest of the defendant, they left the handgun on the sidewalk to be photographed and retrieved by New Bedford police officers responsible for crime scene investigation. Officer Claudia Sampson testified that she photographed the handgun at the scene of the defendant’s arrest, placed the gun in a gun box, and transported it to a *250 locked cabinet at the police station. The following day, she turned the gun box over to Sergeant Spirlet, who inspected the handgun. He testified that the firearm recovered by police was a revolver and identified the gun produced at trial as the same he had inspected. He testified that, when he inspected it, the revolver was loaded with four live rounds of .22 caliber ammunition and one spent casing. He distinguished the latter by explaining that, in contrast to the live rounds, the spent round had no projectile inside its casing; additionally, in contrast to a live round, a spent casing bears an imprint or “striker mark” left when the hammer of the gun strikes the bullet’s casing to fire the weapon, whereas a live round carries no such mark. Sergeant Spirlet testified that, after his inspection, the gun box with the revolver, the live rounds, and the spent casing were sent to the State police barracks in Middleborough for processing. When he later received the gun box from the State police, it contained the revolver, three spent projectiles and their casings, and only one live round; he testified, without objection, that the three additional spent projectiles had been test fired.
While it is conceivable that a revolver may contain a spent casing and still not be capable of discharging a bullet, the compelling inference from such testimony is that the spent casing found by Sergeant Spirlet in the revolver remained after the discharge of a bullet from that revolver. 9 The remote possibility of some other explanation for the presence of the spent casing in the revolver was effectively eliminated by the evidence that three of the live rounds sent to the State police were returned as spent projectiles. On this testimony, the jury could reasonably infer that the State police had test fired the revolver using the live rounds. In view of this evidence, we are satisfied beyond a reasonable doubt that, even without the certificate, the evidence that the revolver was a working firearm and that the ammunition was designed for use in the firearm was overwhelming, and that the erroneous admission of the certificate did not in any *251 way affect the jury’s verdict. As a result, we conclude that the error in this case was harmless beyond a reasonable doubt.
3.
The defendant’s Second Amendment claim.
In his final challenge to the verdicts, the defendant, citing
District of Columbia
v.
Heller,
The defendant asserts that, because G. L. c. 140, § 131, requires a person to obtain a license before he may carry a handgun, the statutory scheme operates as a prior restraint that impermissibly interferes with the exercise of his Second Amendment right to bear arms. Therefore, he argues, his convictions under G. L. c. 269, § 10 (a) and (n), which punish him for carrying a firearm in noncompliance with the license requirement, must be overturned as unconstitutional.
The defendant’s argument rests on the assumption that the protection of the Second Amendment applies to the States as a matter of substantive due process under the Fourteenth Amend *252 ment to the United States Constitution. For the reasons stated in Commonwealth v. Runyan, ante 230 (2010), we conclude that, based on current Federal law, the Second Amendment does not apply to the States, either through the Fourteenth Amendment’s guarantee of substantive due process or otherwise. Because the Second Amendment does not apply to the States, the defendant’s claim that G. L. c. 269, § 10 (a) and (n), and the licensing scheme the statute enforces, infringe on his Second Amendment right to keep and bear arms must fail.
The defendant’s challenge likewise fails under our Massachusetts Constitution, which recognizes no individual right to keep and bear arms. Article 17 of the Massachusetts Declaration of Rights provides: “The people have a right to keep and to bear arms for the common defence. And as, in time of peace, armies are dangerous to liberty, they ought not to be maintained without the consent of the legislature; and the military power shall always be held in an exact subordination to the civil authority, and be governed by it.” In
Commonwealth
v.
Davis,
Judgments affirmed.
Notes
The jury also convicted the defendant of the unlawful possession of ammunition, in violation of G. L. c. 269, § 10 (h), but this conviction was dismissed before sentencing as duplicative of the conviction of unlawful carrying of a loaded firearm.
We acknowledge the amicus brief filed in support of the Commonwealth by the Brady Center to Prevent Gun Violence together with the International Brotherhood of Police Officers, the Legal Community against Violence, the Massachusetts Chiefs of Police, the Massachusetts Million Mom March Chapter of the Brady Campaign to Prevent Gun Violence, and Stop Handgun Violence.
The motion judge, who was not the trial judge, issued a memorandum denying the defendant’s motion to suppress in which he set forth his findings of fact and rulings of law. He later supplemented these findings and rulings in a memorandum of decision and order that denied the defendant’s motion for reconsideration. Our summary draws from both memoranda.
Under the Fourth Amendment to the United States Constitution, a seizure does not occur until the police lay on hands or apply physical force to restrain the suspect’s movement, or until the suspect submits to the assertion of authority. See
California
v.
Hodari D.,
“We have also suggested that the reliability of citizen informants who are identifiable, but may not have been identified, is deserving of greater consideration than that of truly anonymous sources.”
Commonwealth
v.
Costa,
The crime of unlawfully carrying a firearm or a loaded firearm under G. L. c. 269, § 10 (a) and (n), incorporates the definition of a “firearm” and “ammunition” under G. L. c. 140, § 121.
Under G. L. c. 140, § 121, the statute referenced in the certificate, a “firearm” is defined as “a pistol, revolver or other weapon of any description, loaded or unloaded, from which a shot or bullet can be discharged and of which the length of the barrel or barrels is less than 16 inches.” “Ammunition” is defined as “cartridges or cartridge cases, primers (igniter), bullets or propellant powder designed for use in any firearm, rifle or shotgun.”
In objecting to the admission of the certificate, defense counsel did not
*249
mention the confrontation clause or cite
Crawford
v.
Washington,
The jury could not reasonably have inferred, however, that the bullet had been discharged from the revolver in the shooting that preceded the defendant’s arrest because, at trial, the jury did not learn of the shooting. The jury instead were told by the judge that they “should not consider . . . why the defendant may have been approached” by Trooper Cyr prior to his arrest. Therefore, we do not consider such an inference in determining whether the erroneous admission of the certificate was harmless beyond a reasonable doubt.
General Laws c. 269, § 10 (a), makes it an offense to possess a firearm outside of one’s residence or place of business without also having a license to carry firearms that has been issued under the licensing provisions of G. L. c. 140, § 131. General Laws c. 269, § 10 (n), provides for an enhanced sentence when the violation of G. L. c. 269, § 10 (a), is committed with a loaded firearm.
The Second Amendment to the United States Constitution provides: “A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms shall not be infringed.”
In
District of Columbia
v.
Heller,
