Students watch as Staff Sgt. Jose Cardona, 373rd Training Squadron, Detachment 3, C-5M Electrical and Environmental Systems instructor, uses the Interactive Multimedia Instruction tablet for the C-5 Air Conditioning and Pressurization Systems Trainer in conjunction with an interactive schematic of the C-5M environmental and pressurization system Feb. 20, 2019, at the 373rd TRS, Det 3, on Dover Air Force Base, Del. The IMI and schematic allows Cardona to train students on the AC & PST by monitoring actions, inputting malfunctions and simulating on-the-ground or inflight scenarios. (U.S. Air Force photo by Roland Balik)