Sergeant (SGT) Ken Wilson of the 21st Civil Engineering Squadron drills holes in a frozen concrete slab as STAFF Sergeant (SSGT) Tim Johnson of the 21st Equipment Maintenance Squadron directs a heating duct to thaw the ground. They are setting up a mobile aerial arresting system (MAAS) on the runway during Exercise COBBLER FREEZE'87, a cold-weather force projection exercise conducted by the Alaskan Air Command

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. Sergeant (SGT) Ken Wilson of the 21st Civil Engineering Squadron drills holes in a frozen concrete slab as STAFF Sergeant (SSGT) Tim Johnson of the 21st Equipment Maintenance Squadron directs a heating duct to thaw the ground. They are setting up a mobile aerial arresting system (MAAS) on the runway during Exercise COBBLER FREEZE'87, a cold-weather force projection exercise conducted by the Alaskan Air Command. 1987-03-09. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6426903. (Accessed November 21, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (1987-03-09) Sergeant (SGT) Ken Wilson of the 21st Civil Engineering Squadron drills holes in a frozen concrete slab as STAFF Sergeant (SSGT) Tim Johnson of the 21st Equipment Maintenance Squadron directs a heating duct to thaw the ground. They are setting up a mobile aerial arresting system (MAAS) on the runway during Exercise COBBLER FREEZE'87, a cold-weather force projection exercise conducted by the Alaskan Air Command. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6426903
MLA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/6426903>.
Note: These citations are programmatically generated and may be incomplete.