Locksmiths unlock Aviano
U.S. Air Force Staff Sgt. Christopher Carey, 31st Civil Engineer Squadron structural engineering craftsman, places pin segments into an interchangeable core for a keyhole, Feb. 2, 2015, at Aviano Air Base, Italy. To become a structural engineering locksmith, Airmen must complete a four-week certification course that allows them to maintain safes, vaults and other lock and key systems. (U.S. Air Force photo by Staff Sgt. Evelyn Chavez/Released)