Airman Christian Barnhart, 363rd Training Squadron munitions student, runs an arming wire on a Mk82 bomb body suspension lugs to the M905 mechanical tail fuse at Sheppard Air Force Base, Texas, Dec. 8, 2017. Barnhart is in block five of seven of the munitions apprentice course and scheduled to graduate Jan. 9, 2018. (U.S. Air Force photo by Alan R. Quevy)