Book excerpt: The thrilling and inspiring story of a U.S. Marine and his dog Rex, a bomb sniffing German Shepard, who forged a bond of trust and loyalty while serving on the war-torn streets of Iraq's most dangerous city. Called "a deeply affecting tale of courage and devotion in the cauldron of war" by Publishers Weekly, Sergeant Mike Dowling's heart-pounding account of an unbreakable bond between man and dog takes us into the searing 130-degree heat, the choking dust, and the ever-present threat of violent attack in Iraq's infamous Triangle of Death. In 2004, Dowling and his military working dog Rex were part of the first Marine Corps military K9 teams sent to the front lines of combat since Vietnam. It was Rex's job to sniff out weapons caches, suicide bombers, and IEDs, the devastating explosives that wreaked havoc on troops and civilians. It was Mike's job to lead Rex into the heart of danger. An extraordinary chronicle of loyalty in the face of terrible adversity, Sergeant Rex is an unforgettable story of sacrifice, courage, and love.