Thunder Wells

No one ever said surviving an alien invasion would be easy.
Jack Fairbanks made it through the initial wave of attacks, but now the Mawks have seeded the Earth with dozers and crawlers, tracking beasts that crave human flesh and are bent on hunting the remnants of humankind to extinction.
Joined by Lucia, a hardened urban survivor, Jack finds himself caught up in a secret plan to turn the course of the invasion. Can a college sophomore and a ragtag force of soldiers survive when the Mawks descend from orbit and begin their final assault?