Here We Stand

Their old world's in chaos. Their new world's in danger. And they don't trust each other.
Opis is now home to a reluctant band of evacuees in mankind's most distant and secret outpost, Nomad Base. There's no going back to an Earth brought to its knees by bioterrorism. But Nomad's colonists are torn. Do they offer their old world a lifeline by sharing a groundbreaking alien drive technology, creating an exodus that'll overwhelm them, or keep Earth's problems at arm's length from their chance to start over?
While they face the prospect of an alien attack, someone's stirred up a stew of new complications and re-ignited old grudges by making contact with Earth. What's the biggest threat to their survival now, an alien navy or their own feuds?
Whatever happens, they can't give up on Nomad. Here they stand, or die.
The third book of the Nomad series from New York Times bestselling author Karen Traviss.