Cumberland Caverns and Warren County will make prime time national news tonight at 5:30. “NBC Nightly News” correspondent Kevin Tibbles traveled to the county with his producer and a film crew to interview Cumberland Caverns president Teddy Boyd and follow the band Honeyhoney as they were filmed for the PBS television show “Bluegrass Underground.”Tibbles is an four-time emmy winning NBC correspondent based in Chicago and is a regular contributor to “NBC Nightly News with Brian Williams,” “Today” and “MSNBC.”Tibbles has reported from war zones in Iraq, Bosnia, Afghanistan and Rwanda, and covered such varied stories as the aftermath of Hurricanes Katrina and Rita and Princess Diana’s funeral.“NBC Nightly News” is the flagship daily evening television news program for NBC News and is the number 1 rated newscast in America. “NBC Nightly News” is produced from Studio 3B at NBC Studios at 30 Rockefeller Center in New York City.Traveling from New York City to produce the segment was Kim Cornett.