1. Northrop Grumman 12011 Sunset Hills Rd, Reston, VA 20190 Coordinate: 38.95456,-77.35763 Phone: (703) 968-1000
2. Bae Systems 11487 Sunset Hills Rd, Reston, VA 20190 Coordinate: 38.95094,-77.34239 Phone: (703) 668-4000