I must emphasize the extreme sensitivity of this information and that it not leave the room.

4 seconds sound clip from the The Hunt for Red October movie soundboard.

You can hear this line at 00:37:33.323 in the Blu-ray version of the movie.

Quote context

[...]

- Admiral Greer, your conclusions.

- Well, sir, the data support no conclusions as yet.

- The absence of activity in the Pacific suggests this could be just an exercise. It may have nothing to do...

- Suppose it's not an exercise?

- Suppose this is the beginning of a move against NATO?

- NSA can speak to that, Mr. Pelt.

- I must emphasize the extreme sensitivity of this information and that it not leave the room.

- Before sailing, Captain Ramius sent a letter to Admiral Yuri Padorin, chairman of the Red Fleet Northern Political Directorate.

- That's her uncle.

- Whose uncle?

- Ramius' wife. Padorin's her uncle.

- Now, the contents of the letter are unknown...

- But Admiral Padorin immediately demanded a meeting with Premier Chernenko, and within minutes of that meeting, the Soviet fleet sailed with orders to find Red October and sink her.

[...]