Whose gun is that, anyway?

As you scoop down and pick up this mysterious weapon you think, a gun is like a remote control, you can change reality channels by pulling the trigger. So you do. The odd thing is the officer saw you reaching down to pick up the gun and he went for his side cannon. You have never fired a gun, yet you bend over scoop it up, flick off the safety and blast two rounds into the cop's face before he can get his weapon out of it's holster. It was like everything but you was moving in slow motion. You stare at the gun that just took a life. A gold plate in one the grip, etched into the gold is the name Bobby Teenager. There's already two notches in the gun. Two kills?

1. drive away and hide the gun somewhere
2. the same unknown voice talks to you through the police car's P A system
3. Who