Toby Keith is planning to embark on his ninth USO/Armed Forces Entertainment tour. As part of the 12-day, three-nation tour, he will perform a series of concerts, sign autographs and pose for photos with troops serving overseas. Because of security issues, specific dates and destinations have not been announced. Keith began performing on behalf of the USO in 2002, entertaining more than 159,000 troops and their families. Keith sang “American Soldier” and “Should’ve Been a Cowboy” on ABC’s “Dancing With the Stars” last night.