U.S. Air Force Tech. Sgt. John Do, 18th Civil Engineer Squadron Water and Fuel Systems Maintenance craftsman, conducts a progress check test during a Mobile Backflow Prevention Devices Testing Course hosted by the 18th CES Water and Fuel Systems Maintenance Flight at Kadena Air Base, Japan, July 11, 2024. After completion of the four-day course, attendees are certified in backflow prevention and eligible for college credits. (U.S. Air Force photo by Airman 1st Class Jonathan R. Sifuentes)
CAMERA
NIKON D850
LENS
24.0-70.0 mm f/2.8
APERTURE
28/10
SHUTTERSPEED
1/160
ISO
500
No camera details available.
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