September 11 showed us that the face of war is changing. Today, armed forces must battle elusive enemies without traditional targets like military or industrial installations. As a result, special counter-terrorist teams from the armed forces and federal and local law enforcement assume a frontline position, employing sophisticated tactics to combat terrorist operations around the globe. This book provides a detailed look into the history and operations of the nation's elite counterterrorist forces, including the Marshal Service's Special Ops Group, the FBI Hostage Rescue Team, the U.S. Army's 1st Special Forces Operational Detachment-DELTA, and the U.S. Army Special Forces, or "Green Berets."