WASHINGTON - The Americans who raided Osama bin Laden's lair met far less resistance than the Obama administration described in the aftermath. The commandos encountered gunshots from only one man, whom they quickly killed, before sweeping the house and shooting others, who were unarmed, a senior defense official said in the latest account.

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In Thursday's revised telling, the Navy SEALs mounted a precision, floor-by-floor operation to find the al-Qaida leader and his protectors, but without the prolonged and intense firefight that officials had described for several days.

By any measure, the raid was fraught with risk, sensationally bold and a historic success, netting a man who had been on the run for nearly a decade after his terrorist organization pulled off the devastating attacks of September 11, 2001. Even so, in the administration's haste to satisfy the world's hunger for details and eager to make the most of the moment, officials told a tale tarnished by discrepancies and apparent exaggeration.

Whether that matters to most Americans, gratified if not joyful that bin Laden is dead, is an open question. Republican House Speaker John Boehner, for one, shrugged off the backtracking to focus on the big picture: "I had a conversation with the president, and the president outlined to me the series of actions that occurred on Sunday evening. I have no doubt that Osama bin Laden is dead."

President Barack Obama's visit to New York's ground zero on Thursday was a somber and understated event, and he avoided mentioning bin Laden by name. A day earlier, he said the government would not release images of bin Laden's body, a decision taken in part to avoid the perception that America was crowing about killing him.

He plans to go to Fort Campbell, Kentucky, on Friday to meet aviators from the mission.