In this photo taken Tuesday, Dec. 18, 2012, a truck driver watches 

In this photo taken Tuesday, Dec. 18, 2012, a truck driver watches as a freight container, right, is lowered onto a tractor trailer truck by a container crane at the Port of Boston, in Boston. The crane and a reach stacker, left, are operated by longshoremen at the port. The longshoremen's union may strike if they are unable to reach an agreement on their contract that expires Dec. 29, 2012. (AP Photo/Steven Senne)
Associated Press
In this photo taken Tuesday, Dec. 18, 2012, a truck driver watches as a freight container, right, is lowered onto a tractor trailer truck by a container crane at the Port of Boston, in Boston. The crane and a reach stacker, left, are operated by longshoremen at the port. The longshoremen's union may strike if they are unable to reach an agreement on their contract that expires Dec. 29, 2012. (AP Photo/Steven Senne)
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