Senior Airman Howard Zumbrunnen, 757th Aircraft Maintenance Squadron crew chief, puts on the Tough Mudder headband after completing the Tough Mudder obstacle course at Spicer Ranch Oct. 6, 2012, in Beatty, Nev. Airmen of the 757th AMXS and all contenders receive a Tough Mudder headband after completion of the ten mile course. (U.S. Air Force photo by Staff Sgt. Christopher Hubenthal)
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