I keep seeing "train wreck" comms but can't put it all together yet.

Nunez today "off the rails"

Corn crop train wreck yesterday

Others recent (pic related)

Train wreck in Nev yesterday

Amtrak/NJ transit NY/Philly shut down yesterday

Plus some memorable from past:

AOC : "run train"

Harriet Tubman references : underground railroad ?

Kim takes train to China

What's with the train comms ?