In this episode, host Chris Chianelli visits Strasburg. Pennsylvania and the Railroad Museum of Pennsylvania to talk more about power-power to pull roiling stock across the rails in this country. Chris showcases some of the museum's collection of historic locomotives. Then, Chris pays a visit to Chattanooga, Tennessee and the Chattanooga Choo Choo Model Railroad Museum. This layout, located at the historic Chattanooga Choo-Choo, features trains and locomotives that have enough power to pull over 100 cars. Then in the studio, Chris is joined by a guest David Popp (Associate Editor, Model Railroader Magazine) to discuss the latest technology of DCC-Digital Command Control. Having powerful locomotives, capable of pulling many cars, can be enhanced using DCC. This system enables the model railroader to operate multiple trains simultaneously on a single layout.