On Dec. 22, 1984, four black teenagers approached electronics specialist Bernhard Goetz, 37, on the New York City subway. After one of them said, “Give me five dollars,” Goetz pulled out a five-shot revolver and opened fire, injuring all four. Of these, one suffered a severed spinal cord, paralyzing him.

Jordan Neeley’s death was a direct result of the chokehold Daniel Penny held him in, a medical examiner testified Friday, rebutting assertions from the defense team that the former Marine did not apply enough pressure to kill the subway rider and that his death could have had some other cause.

Daniel Penny's martial arts instructor from the Marine Corps took the stand Thursday for day six of witness testimony in Penny's trial in the chokehold death of Jordan Neely.