Colter Stevens: Tell me everything gonna be okay.
Christina Warren: Everything's gonna be okay.
This scene is repeated multiple times in the movie: usually when the main character enters the "source code" the scene begins by panning over a small pond showing a Canada goose taking flight. However the sound editor makes the mistake of dubbing in a recording of a hen mallard duck.
The voice of Jake Gyllenhaal's father is Scott Bakula, who starred in Quantum Leap, which shares the premise of being in another person's body with this movie.