A class 2 railroad crewmember threw a switch for an opposing move, and 
forgot to tell his relief, then they neglected to check their route and shoved 
their cars into what they thought was the correct track.  Unfortunately, they didn't 
realize that they had hit some cars in another track and kept shoving.  Fortunately, 
they didn't get very far, or this would've been a much more messy problem.