>>So where did they hit? Did they bullseye Krakatoa and no one Noticed?
The people that are using this to waste grant money said decades. In the last century, I can only significant impact that I can think of is Tunguska, and that more than a century ago.
Never ceases to amaze me how gullible people can be. And how willing to waste money. Sure it can happen, but to lie at the level they are about it is obscene.