FILE - In this Feb. 23, 2014 file photo, an Army SPC hoists a 44-pound section of a 50 caliber machine gun onto a M1 A2 Abrams tank during a physical demands study at Ft. Stewart, Ga. Surveys find that men in U.S. special operations forces do not believe women can meet the physical and mental demands of their commando jobs, and they fear the Pentagon will lower standards to integrate women into their elite units, according to interviews and documents obtained by The Associated Press. (AP Photo/Stephen B. Morton, File)