T minus 50.

3 seconds sound clip from the WarGames (1983) movie soundboard.

You can hear this line at 00:04:46 in the Blu-ray version of the movie.

Quote context

[...]

- Stand by.

- Launch key inserted.

- Roger.

- On my mark. Rotate launch key to set.

- Three, two, one, mark.

- T minus 50.

(Missile doors whirring)

- Roger, at set.

- Sir?

- T minus 40.

- All right, enable missiles.

- Number one, enabled. Two, enabled. Three, enabled. Four...

[...]