 Bombardier is considering offering the Global 6000, in use with the Royal Air Force as the Raytheon Sentinel and the USAF as the E-11A airborne communications relay.Aircraft selection may be based on whether the service wants a large airframe to carry heavy payloads, or a smaller aircraft that would be more nimble and operate from shorter runways.Companies that attended the industry week in April that are contenders for providing electrical systems include Harris Corporation, Rockwell Collins, Lockheed Martin, L-3 Communications, Raytheon, DRS Technologies, and BAE Systems.