Staff Sgt. Christopher Keller, 436th Security Forces Squadron combat arms instructor, counts boxes of 5.56mm ammunition Dec. 17, 2021, at Dover Air Force Base, Delaware. Keller is one of five instructors at the Dover AFB Combat Arms Training and Maintenance facility. Each person receiving training is allotted an exact number of rounds to use during qualification. (U.S. Air Force photo by Mauricio Campino)
CAMERA
NIKON Z 6
LENS
14.0-24.0 mm f/2.8
APERTURE
28/10
SHUTTERSPEED
1/60
ISO
4000
No camera details available.
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