Officer technical managers with practical experience in ordnance operations. They plan, supervise, train, and direct subordinates in the operation, maintenance, and repair of ordnance equipment and related systems. They assist, plan, coordinate, and advise commands and staffs in ordnance management, logistics, repair, and safety. They may direct or coordinate ordnance and ordnance equipment procurement, production, and evaluation. An Officer of the Regular Navy who is on the retired list.