What he gained from this experience was a healthy understanding of the importance of luck. For the tightly controlling Type-A personality that is apparently common to some members of the SEALs this was humbling indeed.

Although “No Easy Day” gives a strong sense of SEAL camaraderie and even the team members practical joking (who knew they could be punked with glitter?), the author’s fellow fighters are identified strangely at best. One is said to have a big head. Another has “hands as big as shovels.” A third resembles a taller version of the dwarf Gimli from “The Lord of the Rings,” and that’s about it for distinguishing characteristics. Before the bin Laden mission, the author says, he was present at the 2009 SEAL rescue of Richard Phillips, the captain of the cargo ship Maersk Alabama, from the hands of Somali pirates.

It is only after the George W. Bush presidency that the author begins complaining about the slow-moving “Washington machine” that members of the SEALs found frustrating. That irritation mounts in 2011, when the SEALs anxiously awaited their signal to raid Abbottabad, but this account is determined to steer clear of serious politics or leave itself open to election-season manipulation. The worst it has to say about President Obama is that none of the fighters who caught bin Laden wanted to help re-elect him, and that he never followed through on a promise to invite them to the White House for a beer.

Mr. Owen’s new information about the Abbottabad attack adds a human element to much of what has been previously reported. Even reporting like Peter L. Bergen’s in his meticulous book “Manhunt” does not have this new book’s perspective. Mr. Bergen knew what the men had done, but this author knows what at least one of them was thinking. Why were they able to shoot bin Laden’s son Khalid on a staircase in the building where his father was also hiding? This book cites the fact that one assaulter recognized Khalid from a very brief glimpse and whispered, “Khalid,” causing Khalid to peek out of his hiding place one time too many.

The manner in which bin Laden died, in this book’s version, differs crucially but not materially from other accounts. The author says that his team’s point man shot bin Laden — who also peeked at the SEALs and showed himself to a sniper — before the team even entered his living quarters; that bin Laden was shot again as he lay on the floor with a grievous head wound; and that the SEALs shot to kill.

Much more shocking and revelatory is the way the author describes his own handling of the “dead weight,” as the men hustled the body bag to the helicopter. Yes, he had a sense that this was an event of great historical import. But he also had a job to do. And in a set of actions that came as the culmination of all that he had learned from experience, he pulled bin Laden’s beard left and right in order to get the best possible identification photo. He took out a booklet of pictures to help him realize that the Qaeda leader’s nose was his best remaining identifying feature.

He went through a dresser in the bedroom, finding it extremely neat, just like his own. When he found that bin Laden’s guns were not loaded, he felt a SEAL’s contempt for the dead man: “There is no honor in sending people to die for something you won’t even fight for yourself.” And on the helicopter ride out of Abbottabad he sat with bin Laden’s body at his feet while another raider sat on top of it. The flight was overcrowded, he reports.

There is no better illustration in “No Easy Day” that SEALS are ruthless pragmatists. They think fast. They adapt to whatever faces them. They do what they have to do.