Space is a dangerous place, but human-populated worlds are the most dangerous of all.The ship is life Save the ship.The Cygnus-12 crew did just that, losing a quarter of their number repelling boarders. They returned home with news that they'd found an outpost of humanity, hostile, like Cygnus VII used to be.Cain is challenged with building a small military unit to protect the deep space explorers. With the AI's help, he determines that Earth's Marines...