U.S. Air Force Senior Airman McKinley Smith, 1st Maintenance Squadron aircraft metals technology journeyman, welds together two metal plates at Langley Air Force Base, Va., Sep. 3, 2014. Smith said he enjoys fabricating parts not only for aircraft, but for units base-wide. The sheet metals shop also performs corrosion prevention by sandblasting and painting parts in a hanger. (U.S. Air Force photo by Senior Airman Connor Estes/Released)