Chester Yu drove a group of four Joe Boys (himself, Curtis Tam, Melvin Yu, and Peter Ng) to the Golden Dragon using the stolen Dodge. Forty minutes later, at 2:40 a.m., Chester Yu parked the stolen car near the Golden Dragon and stayed in the driver's seat while the others went to the restaurant. Armed with a .45-caliber Commando Mark III rifle (a modern clone of the Thompson submachine gun), two 12 gauge pump-action shotguns, and a .38-caliber revolver, the other three donned nylon stocking masks and entered the restaurant from the second entrance at 818 Washington, looking for members of the Wah Ching. During the trial of Curtis Tam, Chester Yu testified that Tam was wielding a shortened shotgun, Ng had a long-barreled shotgun and a handgun, and Melvin Yu was using the rifle. A crowd estimated between 50 to more than 100 people, many of whom were tourists, were present at the restaurant at the time of the shooting.