Kon-Tiki: Raven's Record, Book 3 (Unabridged‪)‬

Like the ancient Polynesian explorers, migrants aboard the mothership Kon-Tiki endeavor to travel great distances using celestial navigation. A sudden cataclysm renders continental United States into a forbidden zone known as The Big Scorch. Believing the danger to be past, the remaining officials attempt to pick up the pieces and conduct the country's business as usual. General Leonard Bardick discovers that instead of one nation, this time an enemy intends to wipe out the entire planet. 

A trip to establish a new colony on the exoplanet Equinox may be humanity's best chance for survival. Rocket designers must hurdle physical, political and economic barriers before making another warp drive mothership a reality. As if that wasn't enough, a turf war over command of the Kon-Tiki heats up. Given the obstacles that lay before them, humanity's survival may depend on help from a hidden source.