After Cassie 2.0 entered common distribution to the combat elements of the Marine Corps, the first generation Cassies chose to modify themselves to fit her new standard. They could not break the basic instability in their personality matrix that made them incapable of fighting for real, but they were capable of taking on the basic appearance of the second version Cassies. And the through the use of emulator personality shells they could make themselves act like the second version Cassies as well. They became indistinguishable from the new Cassies in almost every way that mattered, and the new Cassies accepted them as sisters. And so the first, in some eyes failed, Cassies became part of the whole Cassie that would assist the Marine Corps for centuries to come.