>>11174659 (Q p/b)

The movie clip quote says,

"Set condition 1 SQ for strategic missile launch."

Searching for condition 1 SQ we find:

"What does "condition 1SQ" mean? Several liberties were taken with the term for cinema's sake but it's short for "1 status quo" which means the submarine is ready to launch it's missiles. In Navy jargon, 4SQ means the lowest level of alertness for missile launch, essentially, a submarine is back at it's base."