Air Force Reserve Senior Airman Krista Guillotte operates the boom aerial refueling system of a KC-135 Stratotanker aircraft while refueling a C-17 Globemaster III in the sky over Ohio, June 2, 2018. Guillotte is a boom operator assigned to the 336th Air Refueling Squadron. Air National Guard photo by Air Force Airman 1st Class Tiffany A. Emery