so you believe arbitrarily ruling out explosions playing a role in the collapse is a Good investigative practice in the event of 3 buildings collapsing in secs through terrorism...
http://www.youtube.com/watch?v=kxGB2YoGV-I
If you see someone get shot in the head with a bullet do you look for a knife as the murder weapon?
NO...but you still forensically determine if it is indeed the cause of death...sherlock
No K9 staged at the debris piles alerted anyone to any explosives or incendiaries...sherlock.
Are you going to answer any of the other questions?
