Neal, as my buddy from Alamosa PD said, the grizzley was probably kinda "prodded" into doing something. That being said, there were some awfully "big" dog tracks found by my partner and I in the middle of the Fourteener's. Yeah, that is where I worked. We weren't the largest county in the state, but, we had more 14,000 ft. mountains, than any other place.
As for comparing grizzley attacks in Colorado, and getting hit by space shuttle debris. I haven't heard of anyone getting hit by space shuttle debris. I have heard of a grizzley attack.
And do remember this, what area I am talking about is the eastern slope. Granted, we were close to or on the continental divide when we were finding alot of this.