"The Latest on Amtrak crash: Was train hit by an object?"
FBI called in
http://news.yahoo.com/latest-amtrak-crash-train-hit-214833636.html
Sorry if this has been posted, I looked but didn't see it.
I personally don't understand why they are releasing it to the press based on something overheard by a conductor. When they can verify it by the transmission or at least by talking with the SEPTA engineer.
Conductor could be mistaken on what she overheard.
Sounds like there was a radio transmission not long prior to the impact. If they can listen to that, wouldn't it answer a lot of questions?