@Davski Well, GK just rubbed me the wrong way, and after going to the facility and seeing what happened there, I figured (and maybe this is a US bias on my part) Franklin had the best idea. And I was able to talk down Aman, so she and Franklin made it.

@blackknight95857669 Same Output, though I had to reload a save because it bugged at some point (the whole base became hostile AFTER the end).

First try I got only Franklin and I was almost sad the second time because I couldn't loot the girl's clothes (in the bugged playthrough I couldn't convince her).

@Davski Yeah I made sure to loot GK's kit just because lol.

@Davski @blackknight95857669 My Mrs and I both played through that quest last night, and it bugged for both of us too (sudden aggro).

Booking it back to your ship and taking a one hour nap will reset the NPCs.

Apparently killing GK's friends and not JUST GK is what causes it.

@kaehlys @Davski Huh, weird.. I did the showdown between the 3 heads and once I had sided with Frank/talked Aman down, GK and friends instantly agged on me when dialogue completed. Interestingly, GK "teleported" to the back of his enclave, so I had to go through his followers to get to him.. but had no bugs, quest completed no issues. I'm on Series X, so no mods and only whatever patch(es) had happened by the day I did the quest. I was also level 56(ish), companion at the time was Hadrian.