"Basic cadets navigate the monkey bars on the obstacle course in the U.S. Air Force Academy's Jacks Valley during the field portion of their Basis Cadet Training July 22, 2015, in Colorado Springs, Colo. ""Second Beast"" is the second half of Basic Cadet training which began with inprocessing June 25, 2015.    Liz Copan/U.S. Air Force Photo"
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