And what arrived was even more unusual -- a bouncing baby boy.
Jonathan and Marie Boothe were trying to hustle from East Orange, N.J., to North Central Hospital in the Bronx, but Caesar conquered that plan.
Jonathan called out for help, and got plenty of it. Officers Debra Garbutt, Ernest Huang and Marie Medina, as well as Amtrak Officer Karen Schrof, helped deliver the baby, who was given the middle name "Penn."
The baby was delivered during rush hour in front of a huge crowd of onlookers.