One Day Too Long: Top Secret Site 85 and the Bombing of North Vietnam

One of the Vietnam War's most closely guarded secrets—a highly classified U.S. radar base in the mountains of neutral Laos—led to the disappearance of a small group of elite military personnel, a loss never fully acknowledged by the American government. Now, thirty years later, one book recounts the harrowing story—and offers some measure of closure on this decades-old mystery.

Because of the covert nature of the mission at Lima Site 85—providing bombing instructions to U.S. Air Force tactic...