(at around 27 mins) When Alexander Augustine drops the port anchor, it uses footage from Battleship (2012). This version of the footage applies a night filter and zooms in so the camera's point of view can shake around, and crops out the ship's numbers from the Battleship movie; the sequence in the movie begins at around 1h 46 mins.
(at around 9 mins) Addison tells Ben she was in the army. Caitlin Bassett was in the army prior to becoming an actress.
CEC is short for Combat Engagement Center.
The fictional battleship USS Montana was almost a real battleship with a different hull number: BB-67. The Navy ordered the Montana class ships in May 1942, but the Montana class was placed on hold because the Iowa-class battleships and the Essex-class aircraft carriers were under construction in the shipyards intended to build the Montana class.