Union Pacific Big Boy  

It's a he. You know, Big Boy....

@@dad90 I understand but I'm used to what the railroaders call the locomotives

Well, I saw a plate on that tender that permanently tells about the Big Boy, so I doubt that's going to happen.

@@dad90 it will be removed and switched.

Think about it, why does it have a pusher on...we will draw you a picture of freight trains backed up if there's a break down,don't thank me kingbobjoe,i will see myself out

Not only is it protection power for the steam, Ed once stated they use the dynamic braking for slowing and stopping! Saves wear on the loco brake shoes.