Maintainers, aircrew test in-ear headset during CBRN exercise
U.S. Air Force Capt. Rory Montgomery, left, 351st Air Refueling Squadron aircraft commander, and Capt. Daylon Roitsch, 351st ARS pilot, wear aircrew eye and respiratory protection equipment while simulating preflight checks in a KC-135 Stratotanker aircraft during a chemical, biological, radiological and nuclear exercise at Royal Air Force Mildenhall, England, Oct. 28, 2020. The aircrew and crew chiefs tested an innovative headset, which uses the bones in the user’s ear to transmit sound waves, to test its capabilities while being worn with AERP equipment and mission-oriented protective posture gear. (U.S. Air Force photo by Karen Abeyasekere)