Note, that five out of eight record was achieved only because the target missile did not have 1) decoys (which are employed by intercontinental ballistic missiles, and 2) the targets had a homing beacon on them.

So here’s the deal — the missile defense system works sometimes, so long as the target has a big radar signal the interceptor can track, and as long as we have perfect weather in Alaska.
Well, it may be an expensive, ineffective anti-missle system, but at least it’s not as expensive as SDI!

Another missile defense test fails