Let them sing.
1 seconds sound clip from the The Hunt for Red October movie soundboard.
You can hear this line at 00:30:48.194 in the Blu-ray version of the movie.
Quote context
[...]
- Navigator. New course, 2-5-0.
- Steering 2-5-0. Yes, course is 2-5-0.
- Sonar contact, Captain. Port quarter. Close aboard. American, Los Angeles class.
- Is the American turning to follow us?
- No, Captain. The American is continuing in his original course. He's continuing northwest.
- What are you talking about? Check your gear.
- Running diagnostics now, Captain.
- The Russian disappeared. One minute, he was steady 4000 yards off the bow, and then he was gone.
- And for a second, I thought I heard...
- I thought I heard singing, sir.
- Singing?
[...]