FILE - In this Friday, Nov. 23, 2012 file photo, chief engineer 

FILE - In this Friday, Nov. 23, 2012 file photo, chief engineer Mike Lahm walks through the pump room as he shows journalists the basement of 120 Wall Street,  a 34-story skyscraper in downtown New York. The basement was totally submerged during Superstorm Sandy but the building was up and running by mid-November. Now 120 Wall Street and other buildings must consider an even bigger, more expensive job: Moving critical infrastructure to higher floors or even roofs. (AP Photo/Tina Fineberg, File)
Associated Press
FILE - In this Friday, Nov. 23, 2012 file photo, chief engineer Mike Lahm walks through the pump room as he shows journalists the basement of 120 Wall Street, a 34-story skyscraper in downtown New York. The basement was totally submerged during Superstorm Sandy but the building was up and running by mid-November. Now 120 Wall Street and other buildings must consider an even bigger, more expensive job: Moving critical infrastructure to higher floors or even roofs. (AP Photo/Tina Fineberg, File)
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