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170225-F-DA916-1044

Staff Sgt. Jon Porubsky, 811th Security Forces Squadron, approaches the finish line at the 18th Annual Security Forces Ruck March on Feb. 25, 2017, on Dover Air Force Base, Del. Porubsky ran the 10 kilometer course with the fastest time of 54 minutes, 23 seconds while carrying a 30-pound ruck on his back. (U.S. Air Force photo by Mauricio Campino)

PHOTO BY: Mauricio Campino
VIRIN: 170225-F-DA916-1044.JPG
FULL SIZE: 1.52 MB
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