Albus looked at Davis like he was a lunatic.
"I'm sorry, but... do you not know how bad becoming depending on another city-state is? Forgive me, but I feel you're missing the point of this "danger to the community" thing. Allow me to explain, please."
Albus stood up, and straightened his moustache.
"The sheriff has a set of turrets available, yes. Where does the spare parts, ammunition, and repair technicians for these turrets come from? That's an important question... without them, the town would be nearly defenseless against attack!"
"Well, that answer to that is simple: you can't manufacture them without pre-war appliances and pre-war amenities. South of the Border is nice, yes, but making turret parts would require the industry of a military base! You've got two choices: One, you can scavenge parts from old world facilities. Two, you can trade for them from people who can make them-- like the Vault Dweller's group. Option one is clearly not viable in the long term, and option two seems good, but holds a clear and present danger."
"What happens when the community you're trading with suddenly wants what you have? Well, obviously, they're going to do everything in their power to withhold what you need. Spare parts, technicians, ammunition, everything that you've come to depend on them for! When you're at the end of your rope, they'll come to offer a deal-- your stuff, for their continued support. And that's how they end your community."
"Eventually, you'll become so wholly dependent on these people that life without them is possible. You're just another colony for them, to dispose of as they see fit! You'll be assimilated into the workforce of this Vault Dweller's group, and you won't even see it coming."
Albus continued to speak, imploringly.
"Please, look to the future of the community! You shouldn't grow dependent on the works of the old world! We have to regain our civilization the hard way, or else we grow complacent-- we become chattel! The raiders shrink in size, but grow in activity because of the Vault Dweller's actions! All the turrets in the world can't save us if the whole Enclave turns its eye towards us!"
It was at that point that Jack came back in, strutting like a cock in a henhouse.
Albus opted to plumb his deep knowledge of history. His instructor had been very enthusiastic about pre-war American life, and so did everything in his power to teach Albus about that.
"Please consider the consequences of a poor community being offered 'help' by a seemingly wealthy benefactor. I'm certain the town's library has some history books that cover early American history. I'm sure you'll be interested to read about them, especially about what happened in Cuba."
Albus turned to Jack. An inquisitive look crossed his face.
"Since your friend is so cocksure about you and your friends' beneficence, I want to see for myself. I want you to take me to your home Vault, and to the Brotherhood of Steel. Let me see who they are and what they do, and I will do everything in my power to assuage the tensions felt by the townsfolk."
Albus smiled gently, and looked Jack in the eyes.
"I only want to help. Maybe your group got it right, this time."