You know how to prepare a witness.
4 seconds sound clip from the A Few Good Men movie soundboard.
You can hear this line at 01:00:47 in the Blu-ray version of the movie.
Quote context
[...]
- Then what's the secret? Huh? What are the magic words?
- We have softball games and marching bands.
- They work at a place where you have to wear camouflage or you might get shot!
- I need you. You're better at research than I am...
- You know how to prepare a witness.
- I have got medical reports and Chinese food. I say we eat first.
- You got any kung pao chicken?
- Intent: No one can prove there was poison on the rag.
[...]