I noticed several low clouds in the various Boston neighborhoods during the trailer. I'm wondering if this is supposed to indicate toxic clouds like in the Sierra Madre or is it supposed to be some benign fog.
I would be surprised if there is not some kind of similar hazard in Boston. Given the differing humid climate and location on the sea, that Boston's toxic clouds may be some combination of fog and toxic cloud (Tog?) and may not resemble the clouds in Fallout New Vegas.