U.S. Air Force Capt. Justin Kong, left, 312th Airlift Squadron pilot, operates a Hypoxia Familiarization Trainer (HFT) while wearing a quick don mask as Staff Sgt. Yomira Ramirez-Martinez, 60th Operations Support Squadron wing physiology noncommissioned officer in charge, engages the oxygen dump valve on a Reduced Oxygen Breathing Device (ROBD) during aerospace physiology training at Travis Air Force Base, California, Sept. 9, 2025. During aerospace physiology training, the ROBD and HFT simulate oxygen levels at different altitudes using a quick don mask, helping aircrew recognize the symptoms of oxygen deprivation in daylight and lowlight conditions. (U.S. Air Force photo by Senior Airman Robert Nichols)
CAMERA
NIKON Z6_3
LENS
NIKKOR Z 50mm f/1.8 S
APERTURE
18/10
SHUTTERSPEED
1/25
ISO
12800
No camera details available.
This photograph is considered public domain and has been cleared for release. If you would like to republish please give the photographer appropriate credit. Further, any commercial or non-commercial use of this photograph or any other DoD image must be made in compliance with guidance found at https://www.dimoc.mil/resources/limitations, which pertains to intellectual property restrictions (e.g., copyright and trademark, including the use of official emblems, insignia, names and slogans), warnings regarding use of images of identifiable personnel, appearance of endorsement, and related matters.