Firefighters launched a rescue operation Tuesday after two window washers became stuck outside the upper floors of a high-rise building in downtown Seattle. Witnesses told KOMO News that the window washers were trapped outside the 29th or 30th floor of the CenturyLink building in the 1600 block of 7th Avenue. Firefighters responded to the scene and rappelled down to the rooftop of the building for a rope rescue. Both window washers then safely rappelled down one at a time the several stories to the ground below. Seattle Fire officials said it appears an equipment malfunction was to blame for the washers getting stuck.