The daycare will be in our basement, and naps will be taken in the basement as well. We've got a ranch-style house and two possible exits - up to the front door, and towards the garage (attached to the basement).

I've got fire alarms on both levels.

My imagination is running away with me here ....
Desperate scenario: If for some reason we cannot use the two doors, I plan to use the windows that opens to the lawn (fortunately there are no shrubs). Just lift them one at a time, and push them out the window.

Yes, tis true about adrenaline kicking in!