RICHMOND, Va.—Two Navy SEALs are scheduled to be arraigned Monday in military court on charges that they mistreated an Iraqi suspect in the gory slayings of four U.S. contractors in Fallujah. One of the SEALs is accused of punching the detainee after his September arrest, while the other is accused of lying to investigators. A third SEAL also accused of lying to investigators about the episode will be arraigned later. All three men have men have received an outpouring of support from people who view them as heroes. A Facebook page created to support the SEALs had more than 45,000...