Part 1—Introduction

"Is it the best thing I've ever done or the worst?"

Up until now, his identity remained a mystery — the man who shot and killed 9/11 mastermind Osama bin Laden following the largest manhunt in history. Stepping out of the shadows and into the spotlight, ex-Navy SEAL Robert O'Neill confesses, "I'm still trying to figure out if it's the best thing I've ever done or the worst thing I've ever done." The best thing because "we accomplished our mission." The worst thing since, "I don't know what's going to happen."

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