U.S. Air Force Capt. Freddy Roman-Otero, 43rd Aeromedical Evacuation Squadron flight nurse, checks his equipment as part of a pre-flight procedure April 27, 2020, at Travis Air Force Base, Calif. Roman-Otero is one of two 43rd AES representatives called to perform training on the Transport Isolation System capsule. This training coincided with the 21st Airlift Squadron’s transfer of four TIS capsules from Joint Base Charleston, S.C., to Travis AFB in an effort to bolster the U.S. Air Force’s AE capabilities. (U.S. Air Force photo by Senior Airman Christian Conrad)