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Staff Sgt. Jeremy Hannah, a geophysical maintenance supervisor with the Air Force Technical Applications Center, Patrick AFB, Fla., peers out the window of a Bell 212 helicopter as it flies over Antarctica. Hannah and five other members of the nuclear treaty monitoring center made the trek from Florida to Antarctica to conduct annual maintenance, troubleshoot, and replace seismometers that contribute to the International Monitoring System. (U.S. Air Force photo by Brian Fox)