Guaranteeing aircrew survivability
Airman 1st Class Raymundo Leija, 374th Operations Support Squadron aircrew flight equipment journeyman, checks a quick donning mask at a simulated 43,000 feet at Yokota Air Base, Japan, July 29, 2015. The quick donning masks, which are located in the cockpit, can be utilized by the aircrew so they can have a constant supply of oxygen if an in-flight incident occurs. (U.S. Air Force photo by Senior Airman Michael Washburn/Released)