http://www.nationaljournal.com/congress/gunshots-outside-capitol-suspect-dead-20131003
Sen. Pat Roberts, R-Kan., was in his office in the Hart Building when he heard, “pop, pop, pop, and then pop again.” He thought it was the start of construction and thought, “God, I don’t need this all afternoon.” He said he soon found out that it was gunfire and that he then welcomed 10-15 Capitol visitors to his office when the lockdown order was given.
“I didn’t get my Marine sword down to do battle,” Roberts said. “But I was ready to.”
same link:
Dylan Price, 30, was standing on First Street between Independence and Constitution Avenues when he heard four or five pops. As one barricade was raised, a police car got snagged and flipped over.