Trey Harwell, a commissioner on the Metropolitan Nashville Airport Authority (MNAA) board, participated in a groundbreaking event this week, along with Mayor Megan Barry and other members of the board.  The $1.2 billion vision project will renovate and expand BNA with the first project, a 2,000 space parking garage, slated for completion next year.  The comprehensive plan includes several new international arrival gates, TSA lanes, and expanded ticketing and baggage claim areas, among other projects.