U.S. Air Force Lt. Col. David Hernandez, 43rd Aeromedical Evacuation Squadron chief flight nurse, prepares a litter stanchion system on a Fairchild Air Force Base KC-135 Stratotanker prior to an aeromedical evacuation mission at Travis Air Force Base, California, Feb. 11, 2020. Training consisted of familiarization of the KC-135 airframe for emergency evacuation procedures, in-flight medical emergency simulations, aircraft emergency simulations and how-to best organize medical equipment for both Fairchild and Travis Airmen in order to qualify for semi-annual requirements. (U.S. Air Force photo by Senior Airman Lawrence Sena)