Katie Francis (L) and Emma Cardini, members of the Difficult Access Team from Wiss, Janney, Elstner Associates, use rapelling ropes to scale down the 234-foot-tall north tower on the west front of the National Cathedral while looking for damage from August's magnitude 5.8 earthquake and high winds from Hurricane Irene October 17, 2011 in Washington, DC. The DAT members used cameras, cell phones and iPad computers to record places on the cathedral's west front where damage was apparent. (Photo by Chip Somodevilla/Getty Images)