Not just the first day, but the very first run. They cheaped out and didn't build a bypass for a 30 MPH curve on an otherwise 80 MPH run. Which, while embarrassing enough, shouldn't have resulted in an accident even if the conductor missed the signage as they did, but wasn't because the railways successfully lobbied to delay rolling out Positive Train Control for a few more years. The entire event was just a perfect illustration of the disastrous state of passenger train transit in this country.
[1] https://en.wikipedia.org/wiki/2017_Washington_train_derailme...