Billy Clemons adds a sticker to the end of a section of guardrail to improve visibility of the hardware as he and a crew install new guardrails along Wattendorf Memorial Highway at Arnold Air Force Base, Tenn., Jan. 27, 2021. Guardrails were added to areas where the shoulder drops off and at bridge ends to increase safety for motorists. (U.S. Air Force photo by Jill Pickett)