[Birdsbane]

Makes about as much sense as any of the other assumptions and there are a great many unknowns.

[dragnet2]

Lets see, so far we have projectiles coming through the windshield.

Now we have terrorist on board sneaking up KO’s the driver, jamming the throttle down then sneaking back to their seat.

And now the union representing those engineers say that recently-implemented schedule changes might have left him in a fatigued state that could have lessened his concentration.

http://www.washingtonpost.com/blogs/wonkblog/wp/2015/05/15/was-the-engineer-on-amtrak-188-too-tired-to-drive/

This is amazing..