Yeah, I enjoyed the hyperbole. A 25 foot wide asteroid would *probably* fragment into smaller pieces after burning off a bit, due to the stress caused by its rapid passage through the atmosphere. A similarly-sized bolide apparently did just that — breaking up into small pieces before impact — back in 1972. There was apparently an audible roar as it came in.
http://www.youtube.com/watch?v=SwWc_eCkSyw
http://www.youtube.com/watch?v=vBu-yUzWXqg
http://www.youtube.com/watch?v=wIv7wL9nWMQ
One last year in Urals was twice that size, about 55 feet
Exploded in atmosphere with force of 500 kt.
Thousands of windows blown out, some building collapsed
Thousands of casualtiesa - mostly cuts from glass.
Haven’t a few space stations like Skylab and MIR decayed enough in their orbits to come crashing into earth?
And the Shuttle is much larger that a bus.