watch as they carefully crawl through. >> they are used to being on the pfa scaffolding so they didn't have complaints. >> reporter: it is a dangerous job. last october, this washington, d.c. construction worker dangled from a safety rope when one side of his pfascaffolding failed. firefighters use rescued him. in yonkers new york, two men clung to the side of a building into the night. their scaffold hanging off the size of a high-rise building. one climbed through a window, the other lowered to the ground. wednesday's ordeal ended safely and paramedics that attended to the men after the rescue said they both smiled through it all. >> can you imagine smiling? neither were injured in wednesday's accident. authorities say people below