Jeffrey Pelt: Mr. Ryan, I'm a politician. Which means I'm a cheat and a liar and when I'm not kissing babies I'm stealing their lollipops.
Aboard the aircraft carrier, there is a closed-circuit TV that shows the operations on the flight deck. At one point, a gull-gray F-14 Tomcat, in obvious distress, comes in for a landing. The camera cuts away from the TV to Ryan's face, and the cuts back to the TV. All of a sudden, the plane crashing is no longer an F-14, but an old Korean War-era fighter (F-9F Panther of VF-21), colored the dark blue the Navy stopped using in the 1950s. The director chose to insert a piece of stock footage from George Duncan's crash on the deck of USS Midway (CV-41) on July 23rd, 1951 rather than build a model F-14 to crash for an otherwise unimportant scene.
Paramount Studios essentially rented a US submarine to be in the movie. The USS Houston (SSN 713) played the USS Dallas and the surface scenes were filmed off of Long Beach, CA and Port Angelas, WA. Two crewmembers off the Houston were actually given very small speaking parts in the movie.