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Airmen from the Air Force Technical Applications Center, Patrick AFB, Fla., enter their Hybrid Power Station at Mt. Newell, Antarctica, to conduct annual maintenance at the center’s southernmost seismic site as part of AFTAC’s global nuclear treaty monitoring mission. Pictured: Staff Sgt. Jeremy Hannah and Senior Airmen Richard Westra and Andrew Pouncy. (U.S. Air Force photo by Brian Fox)