Watch Auburn-Lewiston Airport Over Run with Foam [VIDEO]

A serious oopsy had foam at a hanger 20-25 feet high in areas! 

The entire hanger at Lufthansa in the Auburn-Lewiston Municipal Airport filled with fire retardant foam when something went wrong...

4 people missing were in upper levels, so they were fine. But employees were buried and some actually inhaled the stuff. They were checked out and are going to be okay.

The good news is that this foam stuff isn't dangerous, and it will just eventually go away...just like on the Brady Bunch when they flooded the laundry room with the washing machine (ask your parents).

In some parts of the hanger, the foam was 20-25 feet high!  They had it all cleaned up in a few hours and then the real clean up inside started. Looks like damage is expected to be low and they are working to figure out how to make sure that doesn't happen again...