BELMONT, Maine — Mack Page was sound asleep in his bed at 11 p.m. on Monday, Dec. 3, when he was startled awake by the frantic barking of his black Labrador. “What have I got now?” the 63-year-old commander of the Maine Militia remembers wondering. “A raccoon? A coyote?” But it was none of those things. Instead, Page’s dark residence on a quiet Belmont road suddenly was lit up by men outside his windows carrying flashlights. He lives alone, he’s not in the best of health and he was scared. “They called, ‘State police! Come out with your hands up!’”...