Out of the blue it struck—that dread, mysterious force, dealing death, destruction and misery to millions. America found herself stripped of her strongest defenses as battleships, huge guns, skyscrapers, factories and transportation systems crumbled to dust before the voracious flame. No one could tell where it came from; where it would next strike; no one was safe from its hot, devouring maw. An entire nation stood crippled, paralyzed by panic as Operator 5, alone, fought to save America from the red ruin loosed upon it.