Staff Sgt. Kelcey McDonald, U.S. Air Force Heritage of America Band audio engineer, demonstrates the use of a sound board Dec. 7, 2012, at Christopher Newport University’s Ferguson Hall, Newport News, Va. As the band’s audio engineer, McDonald ensures the listening experience for concert-goers is a pleasant one. (U.S. Air Force photo by Airman 1st Class R. Alex Durbin/Released)