Air Force Airman 1st Class Joseph Lyon, 31st Munitions Squadron armament team member, crawls through a mud lane during the Wyvern Mud Run, Oct. 17, 2015, at Aviano Air Base, Italy. The six-mile course included 400,000 pounds of mud and more than 12 obstacles, such as T-walls, low crawls and tire flips. ( Air Force photo by Senior Airman Areca T. Bell/Released)

---

Size: 5851px × 3291px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., 31fw, 31st, ab, air, airman, areca, aviano, base, bell, fighter, italy, mud, mudder, mun, run, senior, sra, tough, wilson, wing, wyvern