Some of the dialogue in T2 hints that Skynet was a network of some kind. Less than a month after it came online, it seems that the US military attempted to turn it off again.
The system goes on-line August 4th, 1997. Human decisions are removed from strategic defense. Skynet begins to learn, at a geometric rate. It becomes self-aware at 2:14 P.M. eastern time, August 29. In a panic, they try to pull the plug.
- Terminator 2: Judgment Day
Yet the novelization of Terminator 2: Judgment Day clearly states that Skynet is housed in a single location:
One day the computer designed to automatically control the U.S. nuclear strike force would become “alive,” and Skynet’s first sentient decision would be that mankind was obsolete. It would launch a first strike, riding out the firestorm of retaliation to follow, safe in a hardened underground complex in Cheyenne Mountain...
- Terminator 2: Judgment Day (official novelization)
Bear in mind that Cheyenne Mountain is NORAD, and hundreds or thousands of men are stationed there, and that the reason Skynet is safe is because Cheyenne was built to survive a nuclear attack. This means that Skynet is now surrounded by hundreds or thousands of men who know that their families were just killed by Skynet.
Surely the angry men inside Cheyenne with Skynet would have every reason to tear Skynet to pieces, since they have nothing better to do with their time and have to stay put in order to survive?
Did James Cameron recognize these problems? Has he commented on this issue?