What I did to lock hostiles out.

At first I didn't start off with a combination and then I had a combination that they could have a chance to solve and if they solve it you solve theirs and then I had a combination that only unlocks to me and hostiles can't force me to unlock it and I put my hand up to get it. I believe you can't have nothing there you have to have something and I pointed my gun at the combination that only unlocks to me more than anything else 3 weeks ago.