'A riveting, unvarnished and wholly unforgettable portrait of America's most storied commandos at war.' - Joby Warrick, author of Black Flags: The Rise of ISIS, winner of the 2016 Pulitzer Prize for General Nonfiction

A stirringly evocative, thought-provoking, and often jaw-dropping account of SEAL Team Operator Robert O'Neill's awe-inspiring 400-mission career. O'Neill describes his idyllic childhood in Butte, Montana; his impulsive decision to join the SEALs; the arduous evaluation and training process; and the even tougher gauntlet he had to run to join the SEALs' most elite unit.

The Operatordescribes the nonstop action of O'Neill's deployments in Iraq and Afghanistan, evoking the black humor of years-long combat, and reveals firsthand details of the most discussed anti-terrorist operation in military history.