US Air Force (USAF) SENIOR AIRMAN (SRA) Daniel Miles (left) and STAFF Sergeant (SSGT) Brian Johnson, with the 50th Space Wing (SW), Schriever Air Force Base (AFB), Colorado (CO), descend through the "Tough One" obstacle during the obstacle course competition of Guardian Challenge. Guardian Challenge, the world's premier space and missile competition and a four-day event hosted annually at Vandenberg Air Force Base (AFB), California (CA)

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. US Air Force (USAF) SENIOR AIRMAN (SRA) Daniel Miles (left) and STAFF Sergeant (SSGT) Brian Johnson, with the 50th Space Wing (SW), Schriever Air Force Base (AFB), Colorado (CO), descend through the "Tough One" obstacle during the obstacle course competition of Guardian Challenge. Guardian Challenge, the world's premier space and missile competition and a four-day event hosted annually at Vandenberg Air Force Base (AFB), California (CA). 2004-05-05. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662961. (Accessed July 17, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (2004-05-05) US Air Force (USAF) SENIOR AIRMAN (SRA) Daniel Miles (left) and STAFF Sergeant (SSGT) Brian Johnson, with the 50th Space Wing (SW), Schriever Air Force Base (AFB), Colorado (CO), descend through the "Tough One" obstacle during the obstacle course competition of Guardian Challenge. Guardian Challenge, the world's premier space and missile competition and a four-day event hosted annually at Vandenberg Air Force Base (AFB), California (CA). Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662961
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/6662961>.
Note: These citations are programmatically generated and may be incomplete.