You know guys, I just realized:
Watching movies, reading books, and playing videogames would be a mandatory part of our TG training for all of our teams.
"Now, can anyone tell me what the Colonial Marines did wrong here?"
"Everyone must play through Half-Life and Half-Life 2. The G-Man and the Combine are very real, and very, very dangerous realities out here in the Meta. And two things that these games will teach you, is to never get on the wrong side of Dr. Gordon Freeman or Corporal Adrian Shephard."
"Sir, why can't we recruit a version of Dr. Freeman to OUR side? I mean, he's a Protagonist, right?"
"We CAN'T, Vreetek, because he's employed by the G-Man. And he is not someone who let's his employees out of his grasp."