The two servicemembers killed in southern Afghanistan Wednesday by a shooter in an Afghan uniform were Air Force special operations troops, the Pentagon said Thursday. Capt. Matthew D. Roland, 27, and Staff Sgt. Forrest B. Sibley, 31, were shot and killed Wednesday by a lone gunman dressed in an Afghan uniform. He opened fire on their vehicle near Camp Antonlik, in Helmand province, the Pentagon said in a news release. Military officials initially reported that two gunmen carried out the attack and that both had been killed in the ensuing firefight. But on Thursday, coalition officials said the shooter and...