Helicopters: Ghost in the Shell
As in "SECTION-9", two helicopters fly over the buildings of New Port City to begin the episode, which is a reference to the 1995 movie Ghost in the Shell. An interesting thing to note is the color of the choppers. They are blue on top and white on the bottom, which is the exact same color that the two helicopters have in beginning of the 1995 movie. Also similar to the movie is the placement of emergency lights on the bottom and on the tail of their bodies.