A Air Force Airman Survival, Evasion, Resistance, Escape (SERE) specialist paces Class 16-02C during their first ruck assessment at Joint Base San Antonio-Lackland Medina Annex, Texas, Aug. 6, 2015. The SERE cadre walks the four-mile track at a strict 15-minute lap pace to give the SERE candidates a visual reference of the pace to exceed. ( Air Force photo by Tech. Sgt. Chad Chisholm/Released)

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Size: 4426px × 2664px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: antonio, candidate, lackland, medina, san, sere