A Hollow Coronation — Step 3
Access the H.E.L.M. via the Director and select "A Hollow Coronation." Then connect the recovered Atlas Skews to the final Atlas Terminal.
With the final Atlas Skews in hand, it is time to activate the Caliburn Gatehouse and pass through the gateway.
"Quickly now. Before Xivu's minions find a way to breach the Gatehouse." —Queen Mara Sov