Staff Sgt. Tony Johnson, a flying crew chief with the 437th Aircraft Maintenance Squadron, checks the hydraulic system before take-off  onboard a C17 Globemaster III at Charleston Air Force Base, S.C., Jan. 25, 2010. Cargo aircraft are being staged and prepared to provide transportation for various supplies in support of Operation Unified Response in Haiti. (U.S. Air Force photo by Staff Sgt. Ali E. Flisek)
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Taken on 25 January 2010 12:41
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