This is the last mission in the "Join a Faction" lineup that can be played by users playing on the Free to Play version, however several other Avant Gardens missions are now unlocked.
In alpha testing and early beta testing, this mission was given by Kit Wanderwhere. It was then changed to Crash Helmut, and is now given by Vance Bulwark.
After assigning the mission, Vance Bulwark disappears.