this whole "event" happened less than an hour's drive from my house. yes, i heard the noise, saw more than i expected too. they're eventually going to move debris and remains to Barksdale AFB. i've watched about 2 days of coverage and got more information when they were actually letting the NASA engineers discuss what the potential problems were and to advise the public of what they know as of this time. these men are a very tight-knit community that devote their lives to the exploration of space, unselfishly.
terrorism has been ruled out, the shuttle was flying at over Mach 18 at an elevation of over 200,000 feet at the time a problem was noted. there are no ground-to-air missiles that are capable of reaching that height (30,000 max) or that speed (mach 3 tops).
yes, the shuttle is over 25 years old but the avionics package had been upgraded (some older units removed) and all the wiring had been redone in all of the shuttles due to wear issues and some incidents of arcing.
as far as the posts concerning the israeli crewmember on board, this guy has a very distinguished career in the israeli military and had been in the NASA space program since about 1996 (unsure of the exact date) and i find it highly unlikely that someone with his career and family background (mother and grandmother were holocaust survivors) could or would attempt to sabotage the shuttle. the items he brought on-board were a message of peace (a picture drawn by a child in a concentration camp during WW2).
my heart and prayers go out to the families of these brave men and women of the shuttle, to those having to stand strong in the face of what's happened and immediately having to face tv camera's say's so much about their character.
i hope that they find out the cause and fix it quickly, there are 2 astronauts and 1 cosmonaut still at the space station.
hopefully by now most everyone is aware of most of what i just stated, if not, then hopefully you're a little bit more informed.