The military vibe check

Essentially the same thing as a vibe check, where one actor commits violence against another, but in this case the actor is the U.S. military. The U.S. military vibe checks their recruits by shooting them in the head in order to only allow the strongest and most resilient to join.

Jim: What happened to Tommy?
Joe: He failed the military vibe check.
Jim: Wow, I always knew he was one of the weaker ones.