APTOPIX South Korea US Winter Military Exercise

Shirtless South Korean Marines and their U.S. counterparts from 3-Marine Expeditionary Force 1st Battalion from Kaneho Bay, Hawaii, run on a snow covered field during their Feb. 4-22 joint military winter exercise in Pyeongchang, east of Seoul, South Korea, Thursday, Feb. 7, 2013. More than 400 marines from the two countries participated in the joint winter exercise held for the first time in South Koreas. (AP Photo/Lee Jin-man)

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