CNN
The Missile Defense Agency has attempted to conduct the test several times this month, but scrubbed each one for a variety of reasons, including various weather problems and a malfunction on a recovery vessel not directly related to the equipment being tested.
A target missile carrying a mock warhead was successfully launched as scheduled from Kodiak, Alaska, at 12:45 a.m. EST, in the first launch of a target missile from Kodiak in support of a full flight test of the system.
However, the agency said the ground-based interceptor "experienced an anomaly shortly before it was to be launched" from the Ronald Reagan Test Site at Kwajalein Atoll in the central Pacific Ocean 16 minutes after the target missile left Alaska.
Nothing really new, or un-expected. Shooting down a rocket with another rocket would be extremely difficult.