U.S. Air Force 1st Lt. Andres G. Velez, a 50th Air Refueling Squadron (ARS) pilot, reads the long format checklist binder while performing a preflight check on a KC-135 Stratotanker aircraft, at MacDill Air Force Base, Fla., April 9, 2021 prior to a 91st ARS deployment. Airmen from the 50th ARS completed pre-deployment measures for deploying 91st ARS Airmen to help reduce the burden of certain preparations before the 91st flew to their deployed location. (U.S. Air Force photo by Airman 1st Class David D. McLoney)