Staff Sgt. Charlie Hemstock, 9th Aircraft Maintenance Squadron crew chief, connects a hose to the U-2 Dragon Lady meant to pump cool air to the electronics to keep it from overheating while grounded at Beale Air Force Base, Calif., June 20, 2017. Maintaining the serviceability of the U-2 ensures Beal's readiness for worldwide intelligence, surveillance and reconnaissance missions. (U.S. Air Force photo by Airman 1st Class Justin Parsons/released)
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