U.S. Air Force Senior Airman William Heckford, 60th Aircraft Maintenance Squadron aerospace propulsion technician, stands fire guard as the liquid nitrogen tank is being refilled on a truck at Travis Air Force Base, California, Feb. 19, 2026. Cryogenics technicians oversee the daily inspection, maintenance and operation of liquid oxygen and liquid nitrogen tanks. (U.S. Air Force photo by Kenneth Abbate)
CAMERA
NIKON D810
LENS
24.0-70.0 mm f/2.8
APERTURE
28/10
SHUTTERSPEED
1/2000
ISO
200
No camera details available.
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