The man ran from the cops, through traffic, to the edge of the bridge. He was out of control. He turned, grabbed a dark object from his waist, pointed it directly at an officer. It all happened within seconds. And now, the officer, Matt Stevens, had to make a potentially fatal decision: Should he pull the trigger? In seven years on the police force, he’d never had to shoot anyone. Now he had no time to debate the question. He had to rely on instinct. And his training.