Prosecutors, attempting to describe the human toll of the gang allegedly led by Bulger, brought former professional gambler Frank Capizzi, 78, to testify about the shootings to demonstrate Bulger's influence on the Boston underworld.
Bulger fled in 1995, eluding a worldwide manhunt for 16 years. He is charged with racketeering, participation in 19 killings, money laundering, illegal gun possession, and extorting drug dealers, bookmakers and businessmen, the Boston Globe reported.
"A firing squad hit us," Capizzi said. "For 2 1/2 minutes, about 100 slugs hit the automobile and it imploded."
Capizzi, 38 at the time, was injured. Albert Plummer, 49, was killed in the attack.
Thursday in court, witness Diane Sussman de Tennan, 63, recounted another incident in which she was riding in a car also struck by a hail of bullets. The driver was killed and her boyfriend was left a quadriplegic, CNN reported.
"I remember hearing this noise, a continuous stream of gunfire, [like] rocks being thrown. It just was non-stop. In retrospect it was a machine gun," she said.