Stan Pate is an unmodified rifleman. But with a keen set of senses and the right equipment, he becomes something more: a sharpshooter who can nail a target one mile across a state line. On a rugged plain spanning California into Nevada, Pate positions himself, takes aim, and fires. Bullseye. He nails the metal target 1,840 yards away, with a loud clang reverberating into the wind. “That’s your two-state solution,”…