Senior Airman Benjamin Amirault uses a band saw to remove extra poly-metal from a crosswalk sign Aug. 15, 2013, at Ellsworth Air Force Base, S.D. The 28th Civil Engineer Squadron sign shop creates a wide variety of signs including traffic, building, street, safety, and special event signs. Amirault is a 28th CES structures technician. (U.S. Air Force photo/Airman 1st Class Alystria Maurer)