>> if true it would mean that three trains were hit by -- reportedly hit by some object within the same area of the crash within a 20-minute span. now, the front windshield of that 729 local train along the same railway was hit, forcing the train into an emergency spot with 80 passengers on board. just moments before that passenger madison calvert witnessed a projectile hit the passenger window of his amtrak acela 2173. >> i was working on my laptop. i was just following up with e-mails. all of a sudden the crash. i quickly turned. didn't see what hit it but saw that everything to my left had been destroyed. >> this new revelation raises questions as to what kind of effect a flying object could have had on the engineer. he's been interviewed.