In 1941, the United Service Organizations, or USO, was founded to provide entertainment to troops around the world. Perhaps the most famous performer who toured with the USO was Bob Hope. Over the course of his career, Hope appeared in or hosted almost 200 USO performances, including annual Christmas tours for 35 consecutive years. This year, in the spirit of the holiday, the Evergreen Children’s Chorale performed a USO-type variety show called “A Passport in Song.”