The first interview has been aired with a former United States Special Forces member who wrote a first-hand account of the May 2011 raid that killed Osama Bin Laden.
The Navy Seal, who uses the pseudonym Mark Owen, was interviewed by the U.S television network CBS.
BBC reports that Mr. Owen repeated his claim that Bin Laden was shot as soon as he looked out of his bedroom, contrary to the official version of events.
The Pentagon has said it may sue Mr. Owen for divulging military secrets.
In the interview, Mr. Owen - who has been identified by U.S media as Matt Bissonnette - defended what he said was the manner of Bin Laden's death.
"If a guy sticks his head around the corner he very easily could have a gun," he told CBS' 60 Minutes programme.
"You don't wait to get that AK or the grenade thrown down the hall or the suicide vest," he added.
He said that Bin Laden was still moving after the first shot and was shot again when the Seals entered the room.
"[The Seals] couldn't see his hands. So, he could've had something. Could've had a hand grenade or something underneath his chest," Mr. Owen said.
U.S officials had stated he was shot only after he had ducked back into the bedroom, prompting fears he might be grabbing a weapon.
Mr. Owen told of a later meeting with President Barack Obama at which the Navy Seals refused to tell him which of them had shot Bin Laden.
"Pulling a trigger is easy.... It's not about who that one person was, it's about the team... that teed this whole thing up," Mr. Owen said.
"Who cares who the one person is. Doesn't matter," he added.