Keith Saliba's book's real-life setting is an isolated, heavily fortified frontier outpost In Vietnam's West-Central Highlands near the Cambodian border and the Ho Chi Minh trail, the main conduit for troops and supplies from North Vietnam. "It was a 20th-century version of the Wild West frontier fortress," Saliba said, in territory Army Special Forces soldiers called "Indian Country"-remote, dangerous. In October 1965, the camp at Plei Me was guarded by a 12-man American Army Special Forces...