Katelyn Ohashi takes on the challenge of running through a military obstacle course. Katelyn is a former UCLA gymnast and National Team member. This course is used for physical training by U.S Marines. 

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Watch my girlfriend attempt this course!

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Austen Alexander is an Active Duty Sailor, who posts weekly to YouTube. He is most popular for his challenge videos including Ms. Bikini Olympia and challenging U.S Marines to obstacle courses and races. Austen is the host of the Hot Mic Show with Austen Alexander podcast and continues to post fitness and lifestyle-related content to Instagram as well.