Kirk: Right.
I want you all to be very careful. This is terra incognita. Many customs will doubtless take us by surprise. It's a forgone conclusion these people have never seen an extra-terrestrial before.
Spock rips a strip out of his robe and ties it around his head like a headband, covering his ears.
Kirk (continues): This is an extremely primitive and paranoid culture. Mr. Chekov, issue
a phaser and communicator to each team.
We'll maintain radio silence except in emergency, Anyone in uniform, get rid of your rank insignia.
Any questions?
All right, let's do our job and get out of here. Our own world is waiting for us to save it if we can.