ALTURA, Minn. — A long-distance trucker reported discovering a handgun missing from the cab of his truck after arriving home in Altura. He told deputies he wasn’t sure whether the gun was stolen or just missing. Nor did he have any idea where the loss occurred. He had been on the road several days. He said the weapon was a Rugger EC9, an 18-ounce so-called pocket rocket. Deputies entered he gun in a national registry of missing weapons.