A version of the word "electromagnetic" is said 26 times throughout the movie.
Aaron Pearl, who plays the Captain, also played Roger in The Rapture (2009) the year previous alongside Misha Collins (Dr. Jacob Glaser) as Castiel. (Technically Castiel's vessel Jimmy Novak, in that particular episode)
The elementary school where the scientists are based is "Stave Falls Elementary" located in Mission, British Columbia.
It's no real surprise, but neither the town "Waterside, ME" or the Air Force Base Jacob goes to on his way back to England really exist.