 Also during the spring of 1999, the wing began to see the results of the Radar System Improvement Program (RSIP); the first AWACS E-3 aircraft to go through RSIP rolled out of the hangar.RSIP is a joint U.S./NATO development program involving a major hardware and software intensive modification to the existing radar system.Installation of RSIP enhances the operational capability of the E-3 radar electronic counter-countermeasures, and dramatically improves system reliability, maintainability, and availability.