Aliens exist... and, as it turns out, most of them aren't that friendly.Jacob Brown wasn't even born yet the first time they attacked Earth. He was only fourteen the second time it happened. When Earth finally came together and fielded its first spaceborne military, Jacob didn't hesitate to volunteer. Serving aboard a mighty starship, he'd be able to defend his planet-and his family-when, inevitably, they came again.Just as he's about to graduate...