The engines are generally all-electric on NE corridor, as the lines are electrified from DC to New Haven. Also why a train (and then several) was stranded a while back because apparently they refuse to have diesels at the ready to take over. Catenary down? Out of luck.
And no question this loco was standard electric Amtrak - I saw the pix finally and it definitely is, being familiar with them.
The radio sounds like the currrent theory is excessive speed so cornering capability of the loco design compared to other designs would be of interest..
Sounds like it was only a couple of years old.