You walk up to the door and this NFPA diamond is posted prominently on the wall above it so that approaching first responders can know to hit the brakes from a very, very long way away.
I love my job. I now return you to your regularly scheduled Twinkie eating, porn surfing, and LOLcats.
![Exciting Diamond Exciting Diamond](http://funraniumlabs.com/wp-content/uploads/2011/12/IMG_26431-768x1024.jpg)