FILE-In this Thursday, Sept. 27, 2012, file photo, a passenger walks through the south terminal at Miami International Airport in Miami. U.S. companies are continuing to cut back on employee travel plans amid uncertainty surrounding the health of the economy. Americans are expected to take 438.1 million business trips this year, down 2 percent from last year, the Global Business Travel Association said Tuesday, Oct. 9, 2012. (AP Photo/Lynne Sladky)

Associated Press
FILE-In this Thursday, Sept. 27, 2012, file photo, a passenger walks through the south terminal at Miami International Airport in Miami. U.S. companies are continuing to cut back on employee travel plans amid uncertainty surrounding the health of the economy. Americans are expected to take 438.1 million business trips this year, down 2 percent from last year, the Global Business Travel Association said Tuesday, Oct. 9, 2012. (AP Photo/Lynne Sladky)
FILE-In this Thursday, Sept. 27, 2012, file photo, a passenger walks through the south terminal at Miami International Airport in Miami. U.S. companies are continuing to cut back on employee travel plans amid uncertainty surrounding the health of the economy. Americans are expected to take 438.1 million business trips this year, down 2 percent from last year, the Global Business Travel Association said Tuesday, Oct. 9, 2012. (AP Photo/Lynne Sladky)
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