Mufflers are making a killing on the black market right now.
~Not-"Not-So-Handy Andy" Jack
From Vent, Enter, Search, a blog for firefighters about hazards and unusual situations encountered on the job. Much of what's documented is epic kludge that may also put firefighters in danger when trying to enter or exit a building.
Now just don't lock yourself in.
There's no way anyone is getting in here. Don't even try.