Besides entertaining the fans during boring moments of professional football and basketball games, cheerleaders from various teams are called upon to travel overseas to entertain the troops. The cheerleaders are part of USO-arranged tours involving singers, actors, and comedians in a tradition dating back to WWII and Bob Hope. Here are some pictures of these selfless cheerleaders at work. Cheerleaders from the Washington Redskins Football team entertain the audience at the Non-Commissioned Officers' Club at Aviano Air Base on July 15, 2002. The Washington Redskins Cheerleaders were on a promotional tour throughout Europe to various bases to entertain troops and promote morale. Washington Redskins Cheerleaders perform at Aviano Air Base, Italy, on July 10, 2002. The Washington Redskins Cheerleaders were on a tour throughout Europe to various bases to entertain troops and promote morale. Washington Redskins Cheerleaders, or "Redskinettes," leave an aircraft carrier flight deck wearing their safety equipment from the flight over. The Norfolk, Va.-based aircraft carrier was on a six-month deployment in support of Operation Enduring Freedom. Rachel, a Washington Wizards Cheerleader sings the country music hit "You're Still The One" for the soldiers of Multi-National Brigade at Camp Bondsteel, Kosovo, on July 4, 2002. Washington Wizards Cheerleader performs at Camp Bondsteel, Kosovo, on July 4, 2002. Washington Wizards Cheerleaders perfom for the soldiers and local invited guests at Camp Bondsteel, Kosovo, July 4, 2002. Katie, a Washington Wizards Cheerleader, dances the night away in front of a full house of multi-national military personnel in the base gym at Camp Butmir, Bosnia-Herzegovina on June 24th, 2002. She along with eleven other professional Wizard cheerleaders visited numerous bases throughout the region. Tampa Bay Buccaneers cheerleaders Kristen Turner, Lakesha Bennet, and Catherine Croake perform at Incirlik Air Base, Turkey March 9, 2002. The cheerleaders were part an Enduring Freedom tour visit of Operation Northern Watch facilities at Incirlik. They visited morale tents, living quarters, fitness areas and flight line operations. The day concluded with a performance at the base park. Stacy Hager, Tampa Bay Buccaneers cheerleader performs at Arkadash park at Incirlik Air Base, Turkey, March 9, 2002, during a Enduring Freedom tour. The cheerleaders visited Operation Northern Watch facilities including the morale tents, living quarters, fitness area and flight line operations. The day concluded with a performance at the base park. The Baltimore Ravens Cheerleaders performed for troops at Camp Justice on May 7, 2002. The Ravens Cheerleaders performed several energetic dance routines and acrobatic stunts that included Camp Justice men and women. After the show, the team members signed autographs and posed for photographs. Members of the National Football League’s Baltimore Ravens Cheerleader Squad performed for troops at Camp Justice on May 7, 2002. The Ravens Cheerleaders performed several energetic dance routines and acrobatic stunts that included Camp Justice men and women. Dallas Cowboys Cheerleaders perform for the troops at Ramstein Air Base, Germany, on Dec. 17, 2000.