Loyalty isn't programmed. It's earned in blood. Shadow isn't just a war dog. He's a Guardian. Trained for the darkest missions. Conditioned to protect at any cost. Bound to his handler by something stronger than commands. But even the strongest bond can be broken. When Shadow begins training in secret, Petty officer Coldlock Knows something is coming. He's right. A covert mission deep in hostile jungle territory uncovers a nightmare-a black-site operation designed to weaponize the most lethal K9 bloodline ever created. At the center of it all... Echo. Shadow's son. Stolen Reprogrammed. Turned into the perfect killing machine. Now Coldlock and his teamare trapped behind enemy lines-hunted by mercenaries, cut off from support, and racing against time. And the greatest threat they face... is what Echo has become. As the mission spirals into chaos, Coldlock is forced into an impossible choice: Destroy the weapon... or bring the dog home. Because some bonds can't be erased. And some Guardians never stop fighting for their pack.
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