Emma Cardini, a civil engineer from Melrose, Mass., right, and a member of the difficult access team, dangles by a rope more than 500 feet above ground, with co-worker Daniel Gach, as they inspect the exterior of the Washington Monument on the National Mall in Washington, Thursday Sept. 29, 2011. (AP Photo/Manuel Balce Ceneta)

Photo by: Manuel Balce Ceneta

Emma Cardini, a civil engineer from Melrose, Mass., right, and a member of the difficult access team, dangles by a rope more than 500 feet above ground, with co-worker Daniel Gach, as they inspect the exterior of the Washington Monument on the National Mall in Washington, Thursday Sept. 29, 2011. (AP Photo/Manuel Balce Ceneta)