The Invincible Iron Man, Vol. 6: Stark Resilient, Book 2 - Collects Invincible Iron Man #29-33. Justine and Sasha Hammer's implementation of Detroit Steel led to worldwide embarrassment for Tony Stark. But that was merely the opening salvo. With War Machine grounded by the Pentagon, Pepper missing the RT-charged heart that made her Rescue and Tony's team struggling, Stark Resilient is in deep trouble.