ever look up at the window washers working on high rise buildings and wonder, how can they do that? this is one dangerous job. the work requires no fear of heights, nerves of steel and, as our next story shows, a tight grip. downtown denver, strong winds sends a scaffold careening out of control with two window washers holding on for dear life. >> just boom, boom, boom. >> everything just happened quick, man. >> we turned around, what the hell's going on here, you know? >> it's november 30th, 2005 and onlookers stand in disbelief outside the denver plaza tower. >> i'm still shooken up just watching all that happen. it was so freaky. it was scary. >> sudden wind between 25 and 30 miles an hour have a scaffold swinging out 40 feet from the high rise office building, then crashing like a battering ram into the windows.