National Guard 10628 Dumfries Rd Manassas, VA 20112 Phone : (703) 368-2068 Business Category National Security Virginia Commonwealth Of--national Guard, Manassas, Usarng Va Dpu 10628 Dumfries Rd Manassas, VA 20112 Phone : (703) 368-2068 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools