LL Cool J ("NCIS: Los Angeles") rings in the holiday season by hosting this one-hour special, which is airing on CBS for the first time. Presented by the National Park Service and National Park Foundation, the program features a diverse performance roster of holiday favorites by Emmy and Tony Award winners Kristin Chenoweth and Billy Porter, along with Patti LaBelle, Chris Stapleton, H.E.R., and Maren Morris, among others. The lighting of the National Christmas Tree will be shown from the Ellipse in President's Park in Washington, D.C.