Iran: 'More than 20 firefighters dead' in Tehran building collapse http://edition.cnn.com/2017/01/19/middleeast/iran-tehran-building-fire-collapse/index.html Video here: [video=youtube;sPGr4D1-zDI]https://www.youtube.com/watch?v=sPGr4D1-zDI[/video] At the 35 second mark you can see and hear the internal building fail as the floors collapse near the top. Gravity does the rest. Straight down into its own footprint. Fire in steal framed buildings, and this one was being constant fought by firefighters too. So truthers, what excuse are you going to pull out of your backside to explain this one away?