To be even marginally absorbed, internalized and understood by the West, the world was dramatically and irretrievably altered by the events that occurred on NineEleven. Just as Biblical history has the Old and New Testaments, modern history is now delineated into two periods, Ante NineEleven and Post NineEleven.
The events described in *Sabada Venganza* the first volume of the Silent Echoes Series, occurred prior to the NineEleven schism, and the events in the second volume, *The Vanished Patrol*, occurred post NineEleven. Subsequent volumes chronicle ContraForce Zulu operations during either, or both, periods.