at the top of the list and strike at the bottom, and seems to be indifferent to the containerization concept. Of course, a navalized UCAV would have a stronger airframe and landing gear for carrier takeoffs and landings; an arresting hook; and avionics for automated carrier approach and landing, along with a "relative navigation system" that will tell the UCAV where it is relative to the carrier. A big concern of program officials is to ensure that widespread use of UCAVs does not increase the number of friendly fire incidents or collateral damage to civilian targets. The evaluation program will investigate this matter in detail. One of the concepts now being given considerable thought is use of a manned aircraft, such as an F-15E Strike Eagle, as a UCAV "mothership", with the weapons systems officer in the back seat directing one or more UCAVs over high-speed datalink. References External links DARPA J-UCAS page Proposed military equipment DARPA