Fallen trees litter the area outside New

Fallen trees litter the area outside New Orleans, Louisiana, where houses are submerged to the roof by floodwaters in this 31 August, 2005 photo, shot from Air Force One as US President George W. Bush flew over the city to survey the damage left by Hurricane Katrina. Returning to Washington from Texas, Air Force One descended to about 5,000 feet (1,500 meters) to allow Bush to view some of the worst damage from Hurricane Katrina, which ravaged the Gulf Coast states of Louisiana, Alabama and Mississippi 29 August.The aircraft was to fly low over the cities of New Orleans, Louisiana; Gulfport and Biloxi in Mississippi; Mobile, Alabama and others before landing in Washington. AFP PHOTO/Jim WATSON (Photo credit should read JIM WATSON/AFP via Getty Images)