A malfunction in a radar built by Raytheon caused the test of a simulated missile attack to fail over the Pacific Ocean. The target missile, which was fired from Kwajalein in the Marsha Islands, functioned normally. The interceptor fired from Vandenberg Air Force Base in California also functioned normally. The Sea-Based X-band radar did not perform as designed.
Wikipedia: Sea-based X-band Radar | Raytheon | Kwajalein Atoll | Vandenberg Air Force Base
SOURCE: REUTERS US missile test mimicking Iran strike fails