This is the intrepid story of the US Navy SEALs. Don Mann and Lance Burton take the reader through the inception of the Naval Combat Demolition Teams (NCDU) and Underwater Demolition Teams (UDT) during World War II, their testing and development in Korea and into the Vietnam War, where the SEALs truly laid the groundwork for their legendary status, and on into the present day. The authors highlight the major steps and operations along the way, discuss the training and what it takes, and explore some of the most important moments in SEAL history.