A Air Force Airman, Survival, Evasion, Resistance, Escape specialist observers SERE candidates during the 200-meter surface swim evaluation during a Physical Assessment and Stamina Test (PAST) at Joint Base San Antonio-Lackland Medina Annex, Texas, Aug. 3, 2015. The freestyle, breaststroke, and sidestroke are the only authorized swimming techniques the candidates are allowed to use during the PAST. ( Air Force photo by Tech. Sgt. Chad Chisholm/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

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