FT. MYER (WUSA 9) - Sometimes at the crack of dawn, Jenn Hall hits the road with the Mobile USO. The custom-made vehicle represents USO-Metro on wheels. The vehicle serves food, fun and support to over half-a-million military families in the Metropolitan area. The Mobile USO travels on dirt roads and into the "boonies," according to Hall, the Mobile USO Coordinator. "It's cool to go to...