Boxed Postwar Lionel 1633 US Navy twin diesel military set. Set consists of 224 US Navy Alco FA A unit that has a repaired pilot that had been previously broken in some capacity but the frame and motor is in nice shape, the 224 B unit frame has been painted black, likely because it had been covered with rust. The shell for the B unit has two large rub marks but is otherwise C6. The 6820 flat car appears unrun and is C7 with a reproduction helicopter, 6830 flat car with submarine shows light run time and is C6-7, the submarine is not an operational example and it is undamaged but needs a good cleaning, 6844 missile firing trail car is missing both brake wheel stands but is otherwise clean with one original missile and a 6017 caboose that shows light run time and is C7. the set box is rough with a good original insert.