What about the. 50 caliber?
3 seconds sound clip from the The Green Berets (1968) movie soundboard.
You can hear this line at 00:49:47 in the Blu-ray version of the movie.
Quote context
[...]
(MILITARY CHOPPER LAUNCHING MISSILES)
- Petersen... I'm worried about you.
- Three tours of duty and you're still acting like a civilian.
- Sergeant, I'm not a Marine. I believe in my comfort.
- A guy in Khe Sahn wanted 2 cases of bourbon.
- Bourbon! How'd you get 2 cases of bourbon?
- From a straight leg in supply in Bien Hoa.
[...]