Just for fairness, I may have overstated his claim in my paraphrasing.

Though, in grabbing the quote below for this very comment from his wikipedia page, I think if anything I made it sound less douchebaggy than it actually was.

In an anonymous February 2013 interview, O'Neill told Esquire that he had killed Osama bin Laden during Operation Neptune Spear in May 2011. In late 2014, in the run-up to credited Fox News[7] and The Washington Post stories on the same topic, O'Neill's name was leaked by other former special forces personnel who were protesting his violation of "a code of silence that forbids them from publicly taking credit for their actions." O'Neill claimed that he and another unnamed member of SEAL Team Six cornered bin Laden, and that after the other SEAL fired and missed, O'Neill killed the terrorist leader with shots to the head.[12]