4/29/2011 - The Federal Emergency Management Agency's headquarters truck arrives at Maxwell Air Force Base, Ala., on April 28, 2011, as part of the response to the deadly storms that struck the state April 27. (Air Force photo/Christopher Kratzer)

4/29/2011 - A row of vehicles assemble at the staging area at Maxwell Air Force Base, Ala., on April 29, 2011, as part of the response to the deadly storms that struck the state April 27. (Air Force photo/Christopher Kratzer)

4/29/2011 - Members of the United States Army Corps of Engineers arrived at Maxwell Air Force Base as part of a emergency response team early Thursday morning. They are working in conjunction with other relief agencies to assist victims of the recent tornados in Alabama. (Air Force photo/Christopher Kratzer)

4/29/2011 - Col. Brian Killough, 42d Air Base Wing commander, talks to an emergency worker at the Maxwell Air Force Base, Ala., staging area on April 29, 2011. Maxwell is serving as a staging area for the response to the tornado disaster that pummeled Alabama April 27. (Air Force photo/Christopher Kratzer)

4/29/2011 - Jerry Smith, Alabama Forestry Commission's public information officer at the Maxwell Air Force Base emergency response site, coordinates with other agencies involved with the tornado relief effort April 29, 2011. Maxwell is serving as a staging area for the response to the tornado disaster that pummeled Alabama April 27. (Air Force photo/Christopher Kratzer)