Backed by the Pentagon: The Navy, long jealous of the Air Force's role in the series, got their own here, including a submarine breaking the ice. That is, the Los Angeles Class submarine seen in the movie is real, and so is her crew. While the camera was rolling, Richard Dean Anderson was ordering around real Navy sailors.
Real Life Writes the Plot: Daniel Jackson getting frostbite on his foot and then having it amputated was not in the original script. It was added in to give an explanation for his absence in the Arctic travelling scene (Michael Shanks, the actor for Daniel Jackson, was unable to make it for the arctic filming scenes due to a schedule conflict at the time it was supposed to happen, and the only scene he could film was when they first arrive on the boat).