don't know much about 'stronomy...
...so I have no idea who has the better take on NEO hazards. It seems to me that being prepared is better than being caught flatfooted, but that--while being good horse sense--is coming from an horse with no experience in these things.
(What the heck did I just call myself...?)
Anyway, should an astrodome-sized rock rip a hole in the sky and go off like a megaton firecracker, I hope I have enough time to slap my forehead and utter a heartfelt "D'oh," before becoming a human cheese-melt...