During a partial government shutdown, area lawmakers were on lockdown following Thursday's chaos on Capitol Hill.
Senator Bob Casey (D-Pa.) was walking across the street at the time and heard gunshots. He was told by police to duck behind a car for protection and a short while later was ushered by police into the capital.
Meanwhile, alarms were going off in buildings all over the area.
Congressmen Scott Perry and Lou Barletta said the experience was unnerving.
"The alarm in the hall started going off," Perry said. "My staff was running through my office shutting off the lights and locking all the doors.
"We were to lock our doors stay away from all doors and windows," Barletta said. "People are feeling a lot of pressure right now and want to lash out. So when you have an incident like this on Capitol Hill where gunshots are fired, a million things go through your mind."
Perry said he was told to stay put for about 45 minutes. After the incident, thoughts turned to the well being of Capitol police and the government shutdown.