During World War II, many aircrews came to Lewistown for the final phase of their training, logging an average eight hours of ground school for every hour of flying time. In this building, the men studied aircraft identification, learned first aid and emergency procedures, listened to veteran combat pilots’ experiences, and viewed government training films featuring stars like Ronald Reagan and Allan Ladd. The building also housed three Link Trainers, fully equipped simulated cockpits. Edwin A. Link invented the first simulator in 1928 to reduce expensive flying time while students learned visual skills on the ground. After U.S. airmail planes suffered a series of crashes in 1934, the Army Air Corps required all pilots to take Link training. On the trainers, pilots learned to rely on instruments while flying. The Japanese Imperial Navy also used the Link Trainer, so pilots on both sides of the conflict trained to fight each other using the same system. Most other airbase buildings had outside facilities, but because the men spent so much time here, the training building had its own inside restroom.