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Aircraft Electrical and Environmental Systems journeyman Airman 1st Class Ketsana Bounphakdy, 305th Aircraft Maintenance Squadron, Joint Base McGuire-Dix-Lakehurst, N.J., adjusts a temperature selection switch on the C-5 Air Conditioning and Pressurization Systems Trainer Feb. 20, 2019, at the 373rd Training Squadron, Detachment 3, on Dover Air Force Base, Del. The AC & PST visually allowed Bounphakdy and other students to see what occurs when switches and knobs are moved on the flight engineer’s control panel. (U.S. Air Force photo by Roland Balik)
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