AP Photo/Evan Vucci
President Bush and first lady Laura Bush pause for a moment of silence for victims of Hurricane Katrina during a visit to the Dr. Martin Luther King Jr. Charter School for Science and Technology on the second anniversary of the storm making landfall, Wednesday, August 29, 2007, in New Orleans.
AP Photo/Bill Haber
New Orleans Jazz musician Irvin Mayfield plays a tune while taking part in a Hurricane Katrina memorial service in New Orleans, Wednesday, Aug. 29, 2007. This is the second anniversary of the deadly hurricane which flooded the city killing over 1,700 people. Mayfield's father was killed during the hurricane and the trumpet was made in remembrance of the victims of the storm.
AP Photo/Ann Heisenfelt
Members of the Lakeview neighborhood take part in a Hurricane Katrina memorial service in New Orleans, Wednesday, Aug. 29, 2007. This is the second anniversary of the deadly hurricane.
AP Photo/Bill Haber
New Orleans Mayor Ray Nagin, right, wipes a tear away as he and his wife Seletha take part in a Hurricane Katrina memorial service in New Orleans, Wednesday, Aug. 29, 2007. This is the second anniversary of the deadly hurricane which flooded the city killing over 1,700 people.
AP Photo/Alex Brandon
A trumpet player leads a march up the bridge over the Industrial Canal on the second anniversary of Hurricane Katrina in the Lower Ninth Ward of New Orleans, Wednesday, Aug. 29, 2007.
GETTY IMAGES/Mario Tama
Protesters march down the bridge spanning the Industrial Canal into the Lower Ninth Ward Wednesday, Aug. 29, 2007, in New Orleans.
AP Photo/Ann Heisenfelt
Searcher markings remain on the front door of the home of Mai Van Tran, left, and An Van Tran, right, as they watch a ceremony marking the second anniversary of Hurricane Katrina near the 17th Street Canal in New Orleans Wednesday, Aug. 29, 2007. The Van Trans purchased the home after Katrina hit.
MANDEL NGAN/AFP/Getty Images
President George W. Bush gestures towards newly rebuilt bridges as he speaks on Mississippi rebuilding efforts Wednesday, Aug. 29, 2007, at the Our Lady of the Gulf Parish Community Center in Bay St. Louis, Mississippi. Mr. Bush visited Louisiana and Mississippi on the second anniversary of Hurricane Katrina.
AP Photo/Rogelio V. Solis
Gulfport Fire Department Lt. Wade Beesley prepares to ring the fire truck bell in memory of those area residents who died in Hurricane Katrina, two years ago during a city ceremony in Gulfport, Miss., Wednesday, Aug. 29, 2007.
AP Photo/Ann Heisenfelt
Louisiana Gov. Kathleen Blanco prays during a mass commemorating the second anniversary of Hurricane Katrina at St. Louis Cathedral in New Orleans, Wednesday, Aug. 29, 2007.
AP Photo/Ann Heisenfelt
Dolores Frank, center, and Orilee Lear, left, pray during a mass commemorating the second anniversary of Hurricane Katrina at St. Louis Cathedral in New Orleans Wednesday, Aug. 29, 2007. Both of the women reside at Holy Angels retirement community because they can no longer afford the rent at their previous apartments since the hurricane.
GETTY IMAGES/Chris Graythen
A wreath floats in the water near a memorial cross during the St. Bernard Parish Memorial for victims of Hurricane Katrina on Wednesday, Aug. 29, 2007, at Shell Beach in St. Bernard Parish, La.
GETTY IMAGES/Mario Tama
A clock hangs upside down inside the heavily damaged Lawless High School in the Lower Ninth Ward Tuesday, Aug. 28, 2007, in New Orleans.