Tech Sgt. Rattanak Nhok, 363rd Training Squadron A-10 Thunderbolt armament instructor, shows his class the areas that need to be checked during the safe-for-maintenance inspection at Sheppard Air Force Base, Texas, Jan. 19, 2018. The safe-for-maintenance inspection is a required task to be accomplished before any maintenance can be performed on the aircraft. Nhok’s class is in block six of 13 and scheduled to graduate March 23.

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