They handed a female Marine captain an obsolete rifle to humiliate her, until the Master Chief realized whose daughter was holding it.

Jack reached down and picked up the vintage rifle once more, holding it under his arm as he walked toward a small wooden bench near the back wall of the range shelter.

Grace followed him, her boots clicking softly against the concrete floor.

Jack set the rifle across his knees, leaning forward with his elbows resting on his legs. He pointed a thick, weathered finger at the faint silver-burned mark near the receiver.

"Do you know what this mark is, Grace?" Jack asked, using her first name for the very first time.

Grace leaned in, studying the tiny, intricate burnished mark. It looked like a stylized trident interwoven with a heavy geometric cross, barely a quarter of an inch wide.

"I assumed it was an armorer's mark," Grace said. "Or a private gunsmith's crest."

"It's neither," Jack replied softly. "It's a field mark. It was etched into five specific weapons by a Joint Task Force unit operating out of Northern Europe in 2004. A unit that officially didn't exist."

Grace felt a sudden, sharp chill in her chest. Her father had served two decades in the Marine Corps, his service record filled with distinguished commendations, overseas deployments, and administrative leadership roles. But he had rarely spoken about a two-year window in the early 2000s, claiming he was assigned to a staff liaison billet in Europe.

"My father was a logistics officer during that deployment," Grace said, though her voice lacked conviction.

Jack let out a bitter, quiet breath that sounded like dry leaves scraping over concrete.

"Your father was the finest long-range marksman the Department of Defense ever produced," Jack corrected, looking up into her eyes. "He wasn't sitting behind a desk in Europe, Captain. He was leading a four-man special interdiction team alongside naval warfare assets. Including me."

Grace stared at him, her mind racing as she tried to reconcile the quiet, gentle man who had taught her how to shoot tin cans behind their suburban garage with the operative Jack was describing.

"And this rifle?" Grace asked, her hand resting on the canvas case resting on the table.

"This rifle was the key evidence in an unauthorized operation that was erased from the Joint Staff servers twenty years ago," Jack whispered, his eyes fixed on the walnut stock. "Every piece of hardware associated with that night was ordered destroyed by the Department of the Navy. I personally watched three of those rifles go into the smelter at Coronado."