Back at the end of World War II, SAC Headquarters was put in Omaha, at the center of the U.S. The command center itself was built four stories belowground, and reinforced with concrete and steel. The Hole was supposed to withstand anything—but that was before ICBMs and H-bombs. Now there were no illusions. If the Big One came off, the Hole was doomed. That wouldn't keep SAC from controlling its forces, because Looking Glass couldn't be brought down. No one except its pilots ever knew where it was.
