A total of at least 17 shots were fired at two locations Thursday afternoon by two law enforcement agencies — the U.S. Capitol Police and the U.S. Secret Service. The final shots, near the Hart Senate Office Building, killed 34-year-old Miriam Carey of Connecticut, who police said had tried to ram through a security barrier at the White House, knocked over a uniformed Secret Service agent, hit cruisers and breached the outer security perimeter of the Capitol grounds.