A U.S. Army staff sergeant has been accused of sexually assaulting a dozen female soldiers over the past three years. The Washington Post reports Staff Sergeant Angel M. Sanchez could face a court-martial for allegedly using his position as a drill sergeant to threaten victims and, in one case, grabbing a female soldier by the hair and forcing her to perform oral sex. The Pentagon received more than 5,000 sexual assault reports last year, a 50 percent increase over the previous year.