U.S. Air Force Tech. Sgt. Rachel Selph (left) and Staff Sgt. Cali Lutz (middle), 43rd Aeromedical Evacuation Squadron aeromedical evacuation technicians, perform chest compressions during a simulated in-flight medical emergency response on a Fairchild Air Force Base KC-135 Stratotanker during an aeromedical evacuation mission at Travis Air Force Base, California, Feb. 11, 2020. Training consisted of familiarization on the KC-135 for emergency egress procedures, simulated in-flight medical emergencies, aircraft emergencies and medical equipment organization for both aircrews in order meet semi-annual qualification requirements. (U.S. Air Force phot by Senior Airman Lawrence Sena)