Midair Refueling A Hawaii Air National Guard KC-135 Stratotanker aircraft conducts a midair refueling of the military aircraft carrying Defense Secretary James N. Mattis as he travels to New Delhi, Sept. 4, 2018. SHARE IMAGE: Download Image: Full Size (1.26 MB) Tags: National Guard, Mattis, Defense Secretary Photo By: DoD photo by Lisa Ferdinando VIRIN: 180904-D-BN624-0037C.JPG Photo Gallery