The MA National Guard put out request for bids last summer for a $5.5MM project to update many of the failing systems in that building, with construction slated to have begun this winter, which it has. This project appears to have been one of several similar projects at old armory sites in Massachusetts.
It is also interesting that Pine Banks Park has areas large enough for crafts from Borfdoon to descend/land under the cover of darkness, discharging the aliens to their newly renovated quarters right across the street! Coincidence???