CHEYENNE MOUNTAIN AIR FORCE STATION, Colo. – Airman 1st Class Raymond Lopez Llaurador, 721st Security Forces Squadron defender, stands guard at the North Portal of Cheyenne Mountain Air Force Station, Colo., Sept. 15, 2016. Lopez earned a both a bachelor’s and master’s degree in physical education, and spent 15 years teaching in Puerto Rico before joining the military. ( Air Force photo by Airman 1st Class Dennis Hoffman)

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Keywords: 721st, forces, security