Senior Airman Benjamin Amirault, 28th Civil Engineer Squadron structures technician, sprays an ultra violet protective coating on a finished traffic sign at Ellsworth Air Force Base, S.D., Aug. 15, 2013. In the final step of the sign-making process, the UV coating provides a layer of protection from the elements increasing the life of the signs and prevent fading from the sun. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)
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