Back during Firestorm, my crew went into the burned out neighborhoods to restore some of the vital phone lines to satellite towers. A coworker of mine was working next to a burned out lot, where the homeowner was searching for his fire proof safe. He found it, and lamented that if it was destroyed, his life would be in chaos. The man opened the safe, and the contents inside, which were intact, burst into flame. The trick to those things is that it doesn’t give the things inside the oxygen they need to burn. Here, the man opened the safe, and the stuff inside was super-heated, and now had the oxygen they needed.. It needed time to cool before the safe should have been opened.