Boeing (Douglas) NB-47E 532104 Naval Air Test Center Patuxent River RI (Unpainted) — the Rock

RI (Unpainted) — the Rock Island Railroad

it carried the designation GP40X — not to be confused with the entirely different production locomotive that EMD later marketed under the same name

The 2200 series holds a unique place in CTA history

Their distinctive corrugated stainless steel flanks and wide windows became the defining visual identity of the Chicago 'L' for a generation of riders

Boeing (Douglas) NB-47E 532104 Naval Air Test Center Patuxent River RI (Unpainted) — the RockThese are 1 72 scale decals for Boeing (Douglas) NB 47E Stratojet 532104, operated by the Naval Air Test Center (NATC) at Naval Air Station Patuxent River, Maryland as a dedicated engine testbed for the General Electric TF34 turbofan the engine that would power the S 3A Viking. The NB 47E designation indicated a permanent modification that rendered the airframe unsuitable for return to its original bomber role in this case, the installation of a TF34