[He smiles easily,] This place is quite protected, I assure you. We're very much accustomed to keeping tight security within the Order for obvious reasons. No one enters this lab without my knowledge and permission.
I'm afraid I'm not comfortable having just anyone inside my lab, even if they are on the Defense Force. But if you'd like to post them outside, that would be fine -- although it will certainly draw attention to the fact that there's something inside worth investigating, and I can't promise my security will take kindly to people who decide to try poking around. [Yes, he's saying that like his security is more or less sentient. Take that as you like...]