King Edward University is a fictional English university. All the birdseye King Edward scenes were filmed at the Egham campus of Royal Holloway, with the library and chase scenes being filmed at the Temple in London.
Xander's piece of London-based trivia about Jack the Ripper being a member of the Royal Family refers to a theory that Queen Victoria's grandson, Prince Albert Victor, was in fact the infamous British serial killer.
The USS Rafael Peralta is a real destroyer ship based in San Diego, California, that is capable of launching guided missile strikes.
CENTCOM is the United States Central Command, one of the Department of Defense's eleven commands that control and shape the deployment and activities of American military forces around the world.
The train station scene was filmed at Liverpool Street Station in Bishopsgate, London.