Photo Gallery: Shots heard at U.S. Capitol, police report 1 injury 4/7

Emergency personal help an injured person after a shooting on Capitol Hill in Washington, Thursday, Oct. 3, 2013. Police say the U.S. Capitol has been put on a security lockdown amid reports of possible shots fired outside the building.  (AP Photo/ Evan Vucci) ORG XMIT: DCEV204