Robert J. O'Neill is a former United States Navy sailor. A former U.S. Navy SEAL and special warfare operator, O'Neill claims to have fired the shot(s) that killed Osama bin Laden during the raid on his Abbottabad compound on May 1, 2011.
https://en.wikipedia.org/wiki/Robert_...

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There is more than one author in the GoodReads database with this name