FBi investigating shooting at conservative lobbying group. A gunman opened fire on a security guard at the Washington D.C., headquarters of a conservative Christian organization only to be tackled and subdued by the guard whom he had just shot in the arm, authorities said. The suspect, identified by law enforcement sources as Floyd Corkins of Herndon, Va., is alleged to have entered the offices of The Family Research Council and yelled at the guard about the organization's policies. The shooter soon fired a handgun at the guard at around 10:50 a.m. ET. Corkins, who himself was not shot, was...