They were brought into a room with a goat. The soldier had to sit, focus his "chi," stare into the goat’s eyes, and stop its heart using only the power of his intention.
The Pentagon project, code-named Project Jedi (later renamed Project Starlight after a copyright threat from Lucasfilm), had one goal: create a soldier who could neutralize an enemy by pure will. No bullets. No drones. Just a psychic punch from 400 yards. The Men Who Stare At Goats
This wasn't a sci-fi novel. It was a formal military briefing. They were brought into a room with a goat