Missouri. The thing that tends to blow people apart who shoot NPCs near it. Manhattan>Fort Bush>Norfolk Shipyard
I squeezed perpendicular to the Missouri and flew straight towards the gate. Started blowing up so I immediately threw the thrusters in reverse... something else I should be doing maybe? =/
Edit: Giving up. There just doesn't seem to be a way in there. Dropping the mission now. =_=
One would think the Disco forums already has some kind of explanation on how to get in there, but I guess I gave it too much credit. Back to shipping passengers I suppose... *sad face*