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. >> everything just happened quick, man. >> we turned around, what the hell's going on here, you know? >> it's november 30th, 2005. 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. >> there was a lot of gasps, a lot of horror. people were staring out at the street saying, no, no, no. >> heather works on the 18th