The triangles are their primary targets.
5 seconds sound clip from the Dr. Strangelove movie soundboard.
You can hear this line at 00:25:19 in the Blu-ray version of the movie.
Quote context
[...]
- Now, it appears that the order called for the planes to attack their targets inside Russia.
- The planes are fully armed with nuclear weapons with an average load of 40 megatons each.
- Now, the central display of Russia will indicate the position of the planes.
- The triangles are their primary targets.
- The squares are their secondary targets.
- The aircraft will begin penetrating Russian radar cover within 25 minutes.
- General, I find this very difficult to understand.
- I was under the impression that I was the only one in authority to order the use of nuclear weapons.
[...]