But after experiencing numerous close calls in orbit, the astronauts soon discover that not all perils reside in the sky. With his marriage already at risk because he cannot explain his frequent absences and strange activities to his wife, Ourecky learns that his unborn child may be in grave danger as a radiation consequence of his flights into space. Even as the Ourecky and Carson accumulate successful mission after successful mission in space, other crucial events occur much closer to home. Interservice rivalries reach new heights as a caustic but highly influential Navy admiral schemes to steal control of the Project from the Air Force. Realizing that a Soviet GRU agent is operating in their midst, a shadowy team of counter-intelligence operatives scramble to shield the Project’s secrets from discovery, leading to a confrontation that bears fatal consequences. As they train to accomplish more difficult missions against complicated targets, Ourecky and Carson are asked to volunteer to risk their lives one more time in an extremely hazardous rescue mission. The stakes are high; even as they leave the launch pad, there is no certainty that either man will return.

As the Project enters its final phase, Air Force Majors Carson and Ourecky are dispatched on an urgent mission to intercept and investigate a massive orbiting object suspected of harboring nuclear weapons. Emotionally exhausted, with his marriage teetering on the brink, Ourecky reluctantly accepts the assignment; in return for his sacrifice, he is promised an opportunity to go to MIT to pursue the Ph.D he has long desired.As they draw close to the mysterious satellite and prepare to destroy it, they are confronted with a dark secret that they will carry forever, and are forced to contemplate their own mortality and the dire prospect of dying in space.On their return to earth, they are offered an opportunity almost too good to pass up, which entails flying into orbit yet again, except under considerably different circumstances. Ourecky wrestles with his decision, knowing that choosing to fly will almost certainly result in the loss of his marriage while Carson is finally...