A reduced pressure zone backflow preventer halts non-potable water from entering drinkable water during a Mobile Backflow Prevention Devices Testing Course hosted by the 18th Civil Engineer Squadron at Kadena Air Base, Japan, July 17, 2024. Airmen throughout the Pacific Air Forces are visiting Kadena through the month of July to be certified in backflow prevention, enabling them to conduct water and fuel systems maintenance at their respective bases that require the course certification. (U.S. Air Force photo by Airman 1st Jonathan R. Sifuentes)
CAMERA
NIKON D850
LENS
24.0-70.0 mm f/2.8
APERTURE
28/10
SHUTTERSPEED
1/250
ISO
800
No camera details available.
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