Puzzle time

This is a puzzle:

This is a puzzle turned into a fire station:

Jeff's brother, his wife and their two kids gave Biscuit this puzzle for his birthday. Educationally and physically, all the latches and locks are supposed to help improve fine motor skills. But more importantly, it's fun.

For some reason, Biscuit decided that when all the doors of the puzzle were open, it became his firet station. As you can see, he has parked a fire engine or rescue vehicle of some kind in every open door.

In his pwn words, "I'm ready to rescue everybody!"