A man who, earlier this week, reported that somebody had shot at his vehicle has been arrested, himself.  Texarkana, Texas, police say 34-year-old Ralph Crabtree had reported that somebody shot at him while he was driving on Findley Street on the Texas side.  But, as they investigated, police discovered that Crabtree had a gun, too, and returned fire from inside his vehicle.  And, since Crabtree has a previous conviction for possessing a controlled substance, that made him a convicted felon in possession of a fiream.  He's no cooling his heels at the Bi-State Justice Center.