Crystal Peak
From Terminator Wiki
Crystal Peak was an outdated command-center used by United States military.
Terminator 3: Rise of the Machines
After realizing Skynet was taking control over the military force and about to start the nuclear war, General Robert Brewster told John Connor and Kate Brewster to go to Crystal Peak. John and Kate misunderstood General Brewster and believe they can shut down the core system of Skynet there. John Connor, Kate Brewster and the T-850 head to Crystal Peak in order to destroy Skynet, only to find out that Skynet is not located here.
The T-850 and the T-X battle at Crystal Peak, with the T-850 using its last remaining fuel cell to destroy the T-X.
After Judgment Day, the Resistance probably used Crystal Peak as headquarters for a time.
