There must be 4 people at least - that means you and 3 real-player-followers.After giving the case to BoS bunker guard, he gives you Minigun BP. The rumour is that giving the case to Raiders gives you P90c bp. But I never managed to do that.
Please go read some dictionary. "Not to manage to do smth" and "Not to ever do smth" don't mean the same.