A contestant progresses through the course during the 2017 Defenders of Liberty Mud Run at Barksdale Air Force Base, La., April 1. The course offered a variety of obstacles designed to challenge competitors’ skills, strength and endurance over four miles of tough terrain. ( Air Force photo/Senior Airman Mozer O. Da Cunha)

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Size: 4051px × 2700px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: #2bw, #afgsc, #airman, #airmen, #barksdale, #barksdaleafb, #competition, #fitness, #morale, #race