Airman 1st Class Spencer Rahn places a traverse cable in an olive drab canvas bag as one of many steps in the removal of a support structure for a guided missile maintenance platform in a Minuteman III launch tube trainer at Malmstrom Air Force Base, Mont., Feb. 28, 2018. Rahn and other Malmstrom missile maintainers now undergo initial qualification training at Detachment 21 of the 373rd Training Squadron, which is based at Sheppard Air Force Base, Texas. Sheppard stood up three formal training detachments in late 2016 and began a new, structured missile maintenance training program for the Air Force's three missile wings. (U.S. Air Force photo by John Ingle)