Tech. Sgt. Steven D. Bellino, 41, killed another airman at the Medina Training Annex of Joint Base San Antonio-Lackland before turning the gun on himself, the officials said. He joined the Air Force in June 2015 and was a student with the 342nd Training Squadron, which provides training and screening in pararescue, combat control, explosive ordnance disposal and other skills used by elite units in Air Force Special Operations Command.
Air Force officials declined to identify Bellino as the shooter Saturday morning, but they released unclassified details about his brief service record when requested. U.S. officials said he had previously worked for less than two years in the FBI, partly in the New York field office. An FBI spokesman declined to comment.