First things first: self promotion
not a bad idea on your part, eco, but I never claimed Langely stole the idea from me... looks like I need to write better....
Actually, I always told everyone I got the idea from John Gibbons, who was Bush Snr's Science Advisor. The only difficulty was coming up with a cost justification for the operations, but giving the amount of damage large impactors regularly do, that's now pretty much solved.
Eby always asked me who else thought lunar based NEO detection was a good idea, so I just wanted to remind him of who else did...
EP
