In 1982 AGM-134 Tacit Rainbow, a joint Air Force/Navy program was established to produce a persistent antiradiation missile. The requirement was for a low-cost air-launched missile to aid in the destruction of enemy air defense networks.  The proposed missile would combine elements of cruise missiles and Unmanned Aerial Vehicles (UAVs). It was to be carried to target striking distance and launched in large numbers (swarms) from bombers or fighters.  Each vehicle was preprogrammed for a designated target area. Once launched, the AGM-136 Tacit Rainbow vehicle flew to its target area and loitered until it sensed an enemy radar transmission. It would then attack the radar.  If the radar turned off, the Tacit Rainbow would return to orbit and await another radar signal, until it either attacked a target or ran out of fuel. Its design range was about 50 miles when launched from an aircraft. Northrop designed the majority of the missile with Texas Instruments providing the seeker.  The missile was first tested in 1984 and over 30 test vehicles were launched before the program was canceled for budget reasons in 1991. China Lake provided Navy oversight.