supreme court ruled in favor of amtrak being able to make these regulations performance standards themselves, so it's odd to me that happened immediately after the supreme court decision that amtrak decided to make these changes. so there's a lot going on inside of that organization that needs looked at. >> tom, i'm going to come to you with this claim that the train was hit by something. and other trains in that area had been hit by some projectiles. fbi now on this case. what will they be doing specifically to figure out, if this train was hit by something, or this wasn't caused during the derailment. and if it was hit by something, the person or thing that caused it. >> victor, the fbi would be ostensibly be involved in an investigation like this, where you don't know whether it was mechanical or deliberate. there's a series of federal statutes which the fbi has jurisdiction over. that could be damaging a railroad track.