ALL OF YOU LISTEN THE GODDAMN HELL UP.
Remember that room with all the crates and drones, down in the tunnels? Go there. Distract the drones; just start moving boxes. They shouldn't attack, they should just try to correct the system you're fucking around with. Get as many people as possible to do this, because you want the majority of them distracted. DO NOT REMOVE THE BOXES FROM THE ROOM. Unless you like getting backhanded by metal.
Along the back wall there should be a discolored stone; pry it loose. Behind it should be a number keypad. Type in "0032328" and wait for it to beep three times to acknowledge the entry. Type in "449832." If you don't hear a hum and see the drones go into standby, you did it wrong. Three strikes and you're out; and I mean electrocuted out. Also, if the drones catch you fiddling with it, they will kill you, so be fucking quick.
The power won't be restored with that, but it should give John the access he needs to get it going himself after a couple days, so for the love of fucking Christ, be patient.
Additionally; don't think you can go off and do this yourselves, you optimist types. Or just you stupid types. Organize this. You don't have powers down there, you dumb bastards, and I will not cry for any loners who hop down there on their own and try to play hero. You fuck this up and my ass is grass. And your asses are worse.
...Also, John has the shopkeepers. So chill.
ALSO. John wants you out of the tunnels after you get the power back on. So get the hell out once you're done.
[[ooc: MODNOTE. If your character goes down there alone or with less than at least ten people, he or she (and all less-than-ten people with him or her) WILL be killed. And you will require a DP.]]