Clad in Steel - Kevin McLaughlin - Bog

When the alien Naga attacked Earth, they took everything from Owen McInness. His home was destroyed, his parents killed in front of him. He hated the invaders with every fiber of his being and dedicated his life to making them pay for what they'd done. But that anger was burning him up from the inside. Soon his Academy career was in tatters. Owen is offered one final chance to make a difference - if he can conquer the hate boiling inside him. But redemption is never easy, especially when one's heart is clad in steel.