Wanko" in a newspaper report) deployed an Uzi submachine gun concealed in a briefcase to cover the president's evacuation and to deter a potential group attack. The day after the shooting, Hinckley's gun was given to the ATF, which traced its origin. In just 16 minutes, agents found that the gun had been purchased at Rocky's Pawn Shop in Dallas, Texas, on October 13, 1980. It had been loaded with six "Devastator" brand cartridges, which contained small aluminum and lead azide explosive charges designed to explode on contact; the bullet that hit Brady was the only one that exploded. On April 2, after learning that the others could explode at any time, volunteer doctors wearing bulletproof vests removed the bullet from Delahanty's neck. George Washington University Hospital After the Secret Service first announced "shots fired" over its radio network at 2:27 p.m., Reagan—codename "Rawhide"—was taken away by the agents in the limousine ("Stagecoach"). No one knew that Reagan had been shot. After Parr searched Reagan's body and found no blood, he stated that "Rawhide is OK...we're going to Crown" (the White House), as he preferred its medical facilities to an unsecured hospital. Reagan was in great pain from the bullet that struck his rib and believed that his rib had cracked when Parr pushed him into the limousine. When the agent checked him for gunshot wounds, however, Reagan coughed up bright, frothy blood. Although the president believed that he had cut his lip, Parr believed that the cracked rib had punctured Reagan's lung and ordered the motorcade to divert to nearby George Washington University Hospital, which the Secret Service periodically inspected for use. The limousine arrived there less than four minutes after leaving the hotel, while other agents took Hinckley to a DC jail, and Nancy Reagan ("Rainbow") left the White House for the hospital. Although Parr had requested a stretcher, none were ready at the hospital, and it did not normally keep a stretcher at the emergency department's entrance. Reagan exited the limousine and insisted on walking. Reagan acted casually and smiled at onlookers as he walked in. While he entered the hospital unassisted, once inside the president complained of difficulty breathing, his knees buckled, and he went down on one knee; Parr and others assisted him into the emergency department. The Physician to the President, Daniel Ruge, had been near Reagan during the shooting and arrived in a