Ruby Ridge, The Alien Invasion

A derelict ship was found floating out in space decades ago. It was sixteen miles of alien technology captured in Mercury's orbit, intended for an invasion of Earth, and filled with unimaginable monsters. As the Invaders readied two more ships to attack, Jason and Gizmo raced with time to hotwire the stranded craft and launch a counterattack by Earth's Military, bringing the fight to the enemy's home planet. This stand alone book, although continuing from Ruby Lake, The Alien Scourge, starts at their arrival at the enemy planet.
From the unique encounters with weightlessness while fighting in space, to the invasion, conquering, and occupation of a far-away planet with unusual and brutal defenses, these Earth men are joined by a coalition of races who face extinction at the hands of these invaders.
Not knowing if the Earth survived, they must take this planet and occupy and defend it as possibly the last remaining humans in existence. With action and adventure from page one until the end, they struggle with danger and deceit, mystery and alien technology, an, as humans will do, they make a few improvements of their own.