Singing Sergeants Members of the Air Force Band's Singing Sergeants, Tech Sgts. Ashley Keeks, left, and Adrienne Kling, sing Christmas carols at Joint Base Andrews, Md., Dec. 19, 2018. SHARE IMAGE: Download Image: Full Size (1.37 MB) Tags: Air Force Photo By: Master Sgt. Michael Keller VIRIN: 181219-F-SF570-023.JPG Photo Gallery