“Thompson brings the era to life, describing the triumph and tragedy of the pilots and technicians that worked on perhaps the country’s most ambitious Xplane testing program.”—Sky & Telescope

“Thompson is especially strong in describing the human dimension of the X-15 effort, enlivening the narrative with both heroic and humorous anecdotes.”—Air Power History

“Couldn’t put it down.”—U.S. Naval Institute Proceedings

“Thompson’s well-written history of the program captures the technical challenges, the camaraderie and, most of all, the high adventure of X-15 flight. Highly recommended.”—Publishers Weekly

“. . . a very worthwhile book.”—New Scientist