but john purnell did not. the retired protective service officer decided he wassing going to fight back. now he knew guns . he was a protective service officer. he knew how to handle a gun. do you think that he was thinking a at the time that he could stop the rob me, all of his instincts, all of his job training and the last conversation we had, it all kicked in. it all kicked in. and when i seen him go into action and do what he did, i could just only think about our last conversation. john purnell took a shot to the hand from one gunman and a fatal blow to the neck from the other. the gun hand man had a 45 automatic. that gun sounded like a canon. the police report says the gunman didn't get much, 50 bucks , a phone and some credit cards. d.c. police say the gunmen got away from a black chevy malibu and 30 minutes after the robbery a black chevy malibu was set on fire in the 1,000 block of yeuk way, but to this date no direct link has ever been established between the car fire and the robbery. over the year