Forcible entry is always an interesting discussion around the service.  On one side, you've got the forcible entry purists (myself included).  These guys can force a door with a safety pin, a rock and a piece of duct tape.  Despite their McGyver-esk skills, they prefer the irons.

On the other side of the discussion are the mule kickers.  Often mistaken for SWAT Officers, these guys prefer the old size 10 for forcible entry.  Kick... grimace... repeat.  Sometimes it works, sometimes it doesn't.