The Star Alliance Chronicles: Crisis on the Rim by Kevin McDonald Andrews
Approx. 105,560 words.
Published on November 7, 2012.
A cryptic message from a remote sector of the galaxy reveals apocalyptic plans to invade the Coalition of Allied Worlds. All that stands in the way of this powerful invasion force is the crew of the maintenance facility at Base Station DD-109. Can this untested group of officers, and their makeshift fleet confront the enemy and prevent the brutal conquest of the quadrant?