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Senior Airman Joshua Cheung (left) and Staff Sgt. Jerald Delia, crew chiefs with 379th Expeditionary Aircraft Maintenance Squadron, use a TTU-205J Pressure Temperature Test Set. The TTU-205J can be used to test, certify, calibrate and troubleshoot aircraft pitot-static systems or associated pneumatic flight control systems to test for air leaks on a B-52 Stratofortress at Al Udeid Air Base, Qatar, June 2, 2016. (U.S. Air Force photo/Technical Sgt. Carlos J. Treviño/Released)
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