FILE - Transportation Secretary Raymond LaHood, left, listens as Federal Aviation Administrator Michael Huerta, right, speaks during a news conference in this Jan. 11, 2013 file photo t

 

              FILE - Transportation Secretary Raymond LaHood, left, listens as Federal Aviation Administrator Michael Huerta, right, speaks during a news conference in this Jan. 11, 2013 file photo t
FILE - Transportation Secretary Raymond LaHood, left, listens as Federal Aviation Administrator Michael Huerta, right, speaks during a news conference in this Jan. 11, 2013 file photo taken in Washington. Transportation Secretary Ray LaHood and FAA Administrator Michael Huerta said in a joint statement Thursday that the FAA is conducting “a robust safety review and monitoring process to identify any hazards, and develop appropriate risk mitigations” associated with the tower closures. (AP Photo/Susan Walsh, File)