Also Logan, Hanscom, Worcester Airports, container terminal, and lots of piers and real estate including boston seaport district stuff. The runner up was head of Miami-Dade public works and transit, but doesn't appear to manage the port or the airport.
Maybe Mr Davey can figure out how to get a freight connection to the container port (without any space for a train yard, lol), passenger connection to the cruise ship terminal, bulk cargo terminals and/or car terminals that would be railroad served.