Guys with big balls.
Update: Thank you for all the comments, views, etc! Was a nice pre-Christmas present to have it featured.
This was shot for a Channel 4 documentary called 'Concrete Circus' - it'll be available on digital distribution systems soon - UK users may still be able to see it on 4OD though.
Shot on 5DII / 7D - more info:
Raw fire footage viewable here:
Music is from the Hanna OST, tracks are:
Escape 700 & Container Park
Phil Doyle - Paul 'Blue' Joseph - Mathieu Ledoux