Following a recent performance in London at the Royal Albert Hall, country diva Reba McEntire entertained the U.S. and NATO troops affiliated with the Yugoslav air campaign. Billed as Operation Allied Entertainment, McEntire -- along with country's Larry Gatlin, rocker Joan Jett and the Dallas Cowboy Cheerleaders -- will perform a free concert at the Italian air base where several planes and personnel are based. PLUS, Reba Seeks Film Advice -- When McEntire recently decided that she would star in an upcoming television western movie she sought out girlfriend Naomi Judd for advice on which director to choose. Reportedly, McEntire begins production on the new film on June 14th in Vancouver. The Christmas western is slated to air Thanksgiving evening and will coincide with a new Christmas album.