Looks like the USS Nathan James is officially back to being the last ship.
The surprise attack on the new US Navy fleet in the midst of a celebration bore a strong (and no doubt intentional) resemblance to the Japanese attack on Pearl Harbor. The propeller-driven planes used reminded me of the infamous Zeroes, made by the same company that made the projector I was using to watch the show -- Mitsubishi.
The cyber attack that completely crippled the U.S. armed response certainly seemed believable. I find less credence in the premise that a united South America is making a bid for world domination.