Falk (bricknerd, top) and Peter Norman (swoofty, bottom) performed a trans-Atlantic (respectively in Berlin and LA) LEGO co-build with this cute twinset of Union Pacific (UP) locomotives. Both models are excellent demonstrations of all the techniques good train builders are known for, with clever and varied grilles and other texturing details, as well as some very cunning rod and clip work by Falk in the wheels.