President Barack Obama looks on as Vice President Joe Biden gestures during a town hall style meeting at the University of Tampa's Bob Martinez Sports Center in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Charles Dharapak)
- President Barack Obama looks on as Vice President Joe Biden gestures during a town hall style meeting at the University of Tampa's Bob Martinez Sports Center in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Charles Dharapak)
- President Barack Obama greets the crowd upon his arrival at MacDill Air Force Base in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Charles Dharapak)
- President Barack Obama is greeted by Florida Gov. Charlie Crist, left, upon his arrival at MacDill Air Force Base in Tampa, Fla., Thursday, Jan. 28, 2010. At right is Vice President Joe Biden, at rear is a U.S. Secret Service agent. (AP Photo/Charles Dharapak)
- President Barack Obama tours a hangar where workers are performing maintenance on a KC-135 Stratotanker, which is involved in refueling planes participating in relief efforts in Haiti, Thursday, Jan. 28, 2010, at MacDill Air Force Base in Tampa, Fla. (AP Photo/Charles Dharapak)
- President Barack Obama and Vice-President Joe Biden greet well-wishers after arriving at MacDill Air Force Base in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Phelan M. Ebenhack)
- Florida Gov. Charlie Crist, background center, waits to greet Vice President Joe Biden, midground left, as Tampa Mayor Pam Iorio makes a photo of Biden greeting well-wishers after arriving at MacDill Air Force Base in Tampa, Fla., Thursday, Jan. 28, 2009. President Barack Obama and Vice President Joe Biden announced the grants at a town hall-style meeting in Tampa, Fla., Thursday, a follow-up appearance to the president's State of the Union address. The administration says the rail projects will save or create tens of thousands of jobs. (AP Photo/Phelan M. Ebenhack)
- President Barack Obama takes off his jacket and hands it to Vice President Joe Biden, as he takes questions at a town hall style meeting at the University of Tampa's Bob Martinez Sports Center in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Charles Dharapak)
- President Barack Obama speaks at a town hall style meeting at the University of Tampa's Bob Martinez Sports Center in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Charles Dharapak)
- President Barack Obama gestures while speaking at the University of Tampa,in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Chris O'Meara)
- President Barack Obama takes off his jacket and hands it to Vice President Joe Biden as he takes questions at a town hall style meeting at the University of Tampa's Bob Martinez Sports Center in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Charles Dharapak)
- President Barack Obama looks on as Vice-President Joe Biden makes comments about high speed rail during a visit to the University of Tampa,in Tampa, Fla., Thursday, Jan. 28, 2010. (AP Photo/Chris O'Meara)
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