FORT BENNING, GA - AUGUST 21:  Capt. Kristen Griest smiles at the audience gathered during the graduation ceremony of the United States Army's Ranger School on August 21, 2015 at Fort Benning, Georgia . Griest and Haver are the first women ever to successfully complete the U.S. Army's Ranger School.  (Photo by Jessica McGowan/Getty Images)
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