call to raid osama bin laden's compound. how have things changed. but a new warning from intelligence officials. and now i build them. i am a bigger is better kind of guy. i absolutely love building locomotives. i knew i wanted to design locomotives from when i was very young. [ jahmil ] from the outside it looks like such a simple device. when you actually get down into the bare bones of it, there's so much technology that's submerg. [ rob ] my welds are a signature, i could tell my welds apart from anybody's. you lay down that nice bead and you look at it, i love it. they don't go together by themselve there are a lot of little parts, and everyone has their job. [ scott ] i'd love to see it out there on the open tracks. and when i e it, i'm gonna know that i helped build that thing. [ train whistle blows ] here she comes! [ bell clanging ] [ train whistle blows ] wow!