[astyanax]

"This precursor acts as a false target spoofing the APS into engaging it and allowing the main round (following the precursor after a slight delay) a clear path to the target, while the APS is stuck in the 0.2 - 0.4 second delay needed to start its next engagement."
I don't see how that could be effective. If the main round is less than half a second behind the precursor round, wouldn't it just hit the explosive field also?

[Pecos]

In my experience, a half second is close to an eternity in the world of explosives.