All board the longest privately owned train in the world, the circus train from Ringling Brothers and Barnum & Bailey! PT Barnum's circus train started in the 1870s; and the US military used circus loading techniques in World War I. Matt and the circus race against the clock to dismantle tons of equipment and get it on the rails. As they travel from Baltimore to the Washington, DC corridor in the dead of night, Matt discovers the less glamorous side to the greatest show on earth.