A member of the 721 Aerial Port Squadron shows Air Force Chief of Staff Gen. David L. Goldfein and Secretary of the Air Force Barbara Barrett a three dimensional printer during a tour on Ramstein Air Base, Germany, Nov. 22, 2019. The 3D printer exemplifies how the U.S. Air Force continues to use the newest technologies to complete its mission. (Courtesy photo by Lt. Col Sheryll Klinkel)