Senior Airman Benjamin Amirault, 28th Civil Engineer Squadron structures technician, lays out a crosswalk sign onto poly-metal backing at the sign shop at Ellsworth Air Force Base, S.D., Aug. 15, 2013. Amirault sprays rapid tac adhesion promoter and water-based solution on the metal prior to laying out the sign. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)