ACWORTH, Ga. (AP) — A gunman who wounded six colleagues in an Atlanta-area rampage didn't seem enthusiastic about his job loading boxes but never mentioned problems with co-workers or supervisors, his father said Wednesday. Geddy Kramer showed up early Tuesday morning with a shotgun at the FedEx package-sorting center where he worked. He shot a security guard, then fired on those working in a large warehouse before killing himself, authorities have said.