JOINT BASE LEWIS-MCCHORD, Wash. -- U.S. Air Force Airmen with the 62d Operations Support Squadron maintain aircrew flight safety equipment at Joint Base Lewis-McChord, Washington, November 13, 2024. The M69 Joint Service Aircrew Mask Strategic Aircraft assembly is the Air Force’s next generation aircrew Chemical, Biological, Radiological and Nuclear mask. Aircrew flight equipment Airmen play an essential role ensuring aircrew are prepared to execute the global airlift mission.