Engagement Test Two long-range ground-based interceptor missiles are launched from Vandenberg Air Force Base, Calif., March 25, 2019, in the first-ever salvo engagement test of a threat-representative intercontinental ballistic missile target. SHARE IMAGE: Download Image: Full Size (1.85 MB) Photo By: Lisa Simunaci, DOD VIRIN: 190325-D-AD122-002C.JPG Photo Gallery