U.S. Air Force Staff Sgt. Brittney Benke, 57th Maintenance Squadron munitions systems craftsman, and Airman 1st Class Matthew Porto, 57th Maintenance apprentice, attach BSU-32 fins onto the guidance unit of a CATM 9M missile Feb. 7, 2013 at Nellis Air Force Base, Nev. Benke and Porto are assigned to the Precision Guided Munitions shop, building and maintaining all air-to-air missiles, air-to-ground missiles, and computer control groups for guided bombs. (U.S. Air Force photo by Tech. Sgt. Taylor Worley)