the aircraft would've dropped it expecting the guidance package to do its job, so it might not be aimed as accurately as a dumb bomb has to be

That's an interesting point. I was thinking that the aircraft today have much better navigation systems, to enable them to time the drop more precisely...but now I see how reliance on guidance all the way in might make pilots "sloppy". I don't really mean that pejoratively, just that they'd tend to assume they have more latitude and can pay more attention to flying and evasion.

I guess that's the critical thing. The F111 pilots who could drop a dumb bomb within 100 yards at least knew they were dropping dumb bombs.

Terminology: I was using "CPE" thinking it meant "circular probability of error". Is CEP really the standard term?

Thanks for the info, Larry.

--Robert