Born into a family of longstanding military heritage, he dedicates his life to honor the memory of his father who died a hero in the early days of the Vietnam war when Preston was two years old. Now at the pinnacle of a stellar military career, he is a respected warrior and an expert on theater security and East Asia politics. The keystone of the fleet staff, he is trusted confidante to the chief of staff and the admiral. Self-assured, poised, handsome, and physically fit, this quintessential Marine considers himself a future general. Behind his hardened facade, Preston suffers in silence from the consequences of a personal lapse during an attack on forces he led during Operation Iraqi Freedom. Fearing the cost that seeking professional help might have on his career, he resorts to self-medication to ease his psychic pain.