Flying through the clouds—soon enough A pair of Boeing 737 fuselages on a westbound BNSF manifest freight train passing by the reflective waters of Frog Pond west of Trout Creek, Montana, on October 2, 2013. These 737 bodies, as well as other aircraft parts, are manufactured in Wichita, Kansas, and shipped to Boeing in Seattle for final assembly. This train is operating on Montana Rail Link’s scenic Fourth Subdivision.