Have you gone to the kett base? They pull power from the radiation.
iirc Zaeed's son did say to cut the power to the barracks. You can see a turret there that doesn't work anymore.
Ok then. I just don't understand why they are not mentioned in any quest like 'disable the 3 terminals'. Maybe because I had all of them already disabled before meeting massani? idk
Your squad should be talking about a kett outpost in smokes, turns out massani did it. Once you talk to him he says to pick the smaller targets, the barracks, by first disabling the power to it (the terminals). This is probably to avoid reinforcements in the kett's main base.
They possibly optional, given some things in this game trigger due your own exploration, instead of laid bare and explained all the time. The first time I played, I went to that fortress before doing anything else for Massani, so his conversation was already fixed for that situation.
Actually Massani's dialogue is bugged in that convo. On my first playthrough, I killed Invictor before speaking to Massani and his dialogue still pointed out that I hadn't taken the "crown jewel."
