Seven, six, five...
7 seconds sound clip from the WarGames (1983) movie soundboard.
You can hear this line at 00:06:03 in the Blu-ray version of the movie.
Quote context
[...]
- On my mark, rotate launch keys to launch.
- Roger, ready to go to launch.
- Fourteen, thirteen... twelve, eleven...
- Sir, we have a launch order.
- Put your hand on the key, sir.
[...]