Capitol with a gun. A man saw a silver sedan and recognized one of the three men in the car from the Police Lookout description. As he was behind the car, one of the men reached out the window and fired shots at the officer. The gunman dropped the weapon out the window, and police surrounded the vehicle, weapons drawn, and arrested the man. A third man was arrested nearby. As this was going on, several buildings, including the u. S. Capitol, were placed on lockdown. I really thought i was going to see somebody get shot. I wasnt speculating who would shoot first, but it was just what i felt was most likely to happen. Reporter did Police Return fire . They did not. They were in the middle of a crowded tunnel. And it wasnt an option at that point. Reporter a. 45caliber semiautomatic handgun nearby the entrance to the thirdstreet tunnel saying that was the gun that was used to fire at them and was dropped outside of the moving vehicle after they were fired at, and they found a lot of ammun