Analysis of information sources in references of the Wikipedia article "Ground-Based Midcourse Defense" in English language version.
Flight Test Ground-based Interceptor-15, or FTG-15, showcased the system's capabilities, as it was the first successful interception of a simulated intercontinental ballistic missile target by a ground-based interceptor launched by the GMD system. [] while the crew was aware there would be a test launch, they were not privy to the exact nature of what they would face and when.