Women train hard at Marine bootcamp

PARRIS ISLAND, SC - FEBRUARY 25: Female Marine recruits stand in formation during boot camp February 25, 2013 at MCRD Parris Island, South Carolina. All female enlisted Marines and male Marines who were living east of the Mississippi River when they were recruited attend boot camp at Parris Island. About six percent of enlisted Marines are female. (Photo by Scott Olson/Getty Images)

PARRIS ISLAND, SC - FEBRUARY 25: Female Marine recruits stand in formation during boot camp February 25, 2013 at MCRD Parris Island, South Carolina. All female enlisted Marines and male Marines who were living east of the Mississippi River when they were recruited attend boot camp at Parris Island. About six percent of enlisted Marines are female. (Photo by Scott Olson/Getty Images)