However, I provided a video of a military-grade smoke machine compared to the smoke at the Pentagon, which is an exact fit. The Pentagon being the headquarters of the military certainly had access to such equipment. I supplied a description of how smoke machines work and that a smoke machine becomes a flame thrower if the heating element gets too hot, which is also visible in the video, behavior not indicative of the pathetic "steam leak" excuse given by some of the denizens around here. This IS proof, whether or not any of you lot are willing to admit it.