Senior Airman Alex Villanueva, 36th Maintenance Squadron aircraft metals technology journeyman, uses a lathe machine to turn down a piece of metal Feb. 2, 2016, at Andersen Air Force Base, Guam. The aircraft metals technology section consist of machinists and welders responsible for anything that entails small intricate parts that needs to be extremely accurate down to a thousandths of an inch. (U.S. Air Force photo/Airman 1st Class Arielle Vasquez)