What Jackb said (and I'm current AD Security Forces).
I tell people here, we write a pass for your friend, and you're the sponsor, if we jack them up, we jack YOU up.... or at least come questioning.
Makes them think twice about who they're bringing on base.
"And Shepherds we shall be. For thee, my Lord for thee. Power hath descended forth from thy hand, that our feet may swiftly carry out thy command. So we shall flow a river forth to thee and teeming with souls shall it ever be. In nomine Patris, et fili, et Spiritus Sancti. Amen."