First: Trust no one, whatever his uniform or rank unless he is known to you personally.
9 seconds sound clip from the Dr. Strangelove movie soundboard.
You can hear this line at 00:15:25 in the Blu-ray version of the movie.
Quote context
[...]
- Your Commie has no regard for human life, not even his own.
- And for this reason, men, I want to impress upon you the need for extreme watchfullness.
- We must not allow him to gain entrance to this base.
- Now, I am going to give you three simple rules.
- First: Trust no one, whatever his uniform or rank unless he is known to you personally.
- Secondly: Anyone or anything that approaches within 200 yards of the perimeter is to be fired upon.
- Third: If in doubt, shoot first and ask questions afterwards.
- Any variation on these rules must come from me personally.
[...]