How does the description of SAC headquarters emphasize the impersonality of modern war?

The SAC headquarters (Strategic Air Command headquarters) is impersonal and intimidating. The “War Room” or the “Hole”is a bubble underground shielded from harm but also the drama that is taking place in the real world. The pilots have playful monikers like “Ace,” “Dutch,” and “General Hawker” while the Russians remain a nameless enemy somewhere far away.