The Liberty Prime from Fallout 4 was destroyed after the events of Broken Steel in Fallout 3 .
Or they can go against Shaun by siding with one of three other factions : * The Brotherhood of Steel – Siding with the Brotherhood will lead the Sole Survivor to rebuild Liberty Prime ( last seen in Fallout 3 , and destroyed after the events of Broken Steel ) to be used as a weapon to destroy the Institute .
Fallout 4