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Pre-flight Checks
U.S. Air Force Capt. Kyle Brackett, a C-17 Globemaster III instructor pilot with the 21st Airlift Squadron, performs a pre-flight check on a C-17 aircraft from Travis Air Force Base, Calif., which was been loaded with humanitarian aid Sept. 23, 2017, at Joint Base San Antonio-Lackland Kelly Field, Texas. The humanitarian aid was delivered to St. Croix, U.S. Virgin Islands after the island had sustained damage from Hurricane Maria. (U.S. Air Force photo by Master Sgt. Joseph Swafford) Original public domain image from Flickr
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