Senior Master Sgt. Ryan Carson and Tech. Sgt. Nalani Quintello, U.S. Air Force Band’s Max Impact vocalists, sing holiday carols in the lobby of the William A. Jones III building at Joint Base Andrews, Md., Dec. 16, 2015. Max Impact played a surprise performance for the military members and civilians that work in the Jones building to spread holiday cheer. (U.S. Air Force photo by Airman 1st Class Philip Bryant/Released)

Military members and civilians take video of the U.S. Air Force Band’s Max Impact during a surprise performance in the lobby of the William A. Jones III building at Joint Base Andrews, Md., Dec. 16, 2015. Max Impact performed to spread holiday cheer through the building. (U.S. Air Force photo by Airman 1st Class Philip Bryant/Released)

Tech. Sgt. Nalani Quintello, U.S. Air Force Band’s Max Impact vocalist, sings holiday carols in the lobby of the William A. Jones III building at Joint Base Andrews, Md., Dec. 16, 2015. Max Impact played a surprise performance for the military members and civilians that work in the Jones building to spread holiday cheer. (U.S. Air Force photo by Airman 1st Class Philip Bryant/Released)

Master Sgt. Jonathan S. McPherson, U.S. Air Force Band’s Max Impact keyboard player, plays holiday carols in the lobby of the William A. Jones III building at Joint Base Andrews, Md., Dec. 16, 2015. Max Impact played a surprise performance for the military members and civilians that work in the Jones building to spread holiday cheer. (U.S. Air Force photo by Airman 1st Class Philip Bryant/Released)

Senior Master Sgt. Ryan Carson, U.S. Air Force Band’s Max Impact vocalist, sings holiday carols in the lobby of the William A. Jones III building at Joint Base Andrews, Md., Dec. 16, 2015. Max Impact featured Elvis Presley’s “Blue Christmas” during a surprise performance in the Jones building. (U.S. Air Force photo by Airman 1st Class Philip Bryant/Released)