Thomas Lynch, 39th Force Support Squadron supervisory librarian, shows off a keychain made by a MakerBot Replicator 3-D printer at Incirlik Air Base, Turkey, Sept. 18, 2018. Lynch demonstrated how to use the printer and made keychains for the members who attended the U.S. Air Force’s 71st Birthday celebration. (U.S. Air Force photo by Staff Sgt. Brittany E. N. Murphy)