i have no idea how any of it could catch fire unless it was intentional. it was reported, at the time as a "man sized safe", so i guess it could have contained lots of flammables, and Dick Cheney is old and crazy. maybe he had the door open and mistook it for a large ash tray. maybe it's where he kept his white phosphorous collection. it sounds to me like the same sort of thing as hillary's electronic storage accidentally being destroyed with hammers.