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Tech. Sgt. Alfonso Vigil 92nd Maintenance Squadron hydraulics NCO in charge of dayshift, removes a stripped screw from the saddle panel located on the refueling boom Dec. 16, 2016, at Fairchild Air Force Base, Wash. The boom operator uses the ruddervators to guide the boom to another jet during air refueling operations. (U.S. Air Force photo/ Airman 1st Class Sean Campbell)