An airstrike similarly killed Drugeon near Aleppo, Syria, on July 5, the Defense Department said.
Abu Bakr al Turkmani and David Drugeon, ISIS and al Qaeda operatives, killed by airstrikes →
Defense Department said Thursday that Capt. Roland, 27, and Sgt. Sibley, 31, died from injuries suffered a day earlier while traveling near Camp Antonik in Helmand Province, Afghanistan.
Pentagon IDs victims of apparent insider attack as two US airmen →