US Air Force (USAF) personnel assigned to the 30th Space Wing (SW), from Vandenberg Air Force Base (AFB) California (CA) pose for a group photograph with the teams mascot after winning the Schriever Trophy, during the Closing Ceremony for Exercise GUARDIAN CHALLENGE 2002, at Vandenberg AFB, CA. Guardian Challenge, a four-day space and missile competition, is hosted annually at Vandenberg AFB, CA to test the wartime readiness of Air Force Space Command (AFSPC) professionals

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. US Air Force (USAF) personnel assigned to the 30th Space Wing (SW), from Vandenberg Air Force Base (AFB) California (CA) pose for a group photograph with the teams mascot after winning the Schriever Trophy, during the Closing Ceremony for Exercise GUARDIAN CHALLENGE 2002, at Vandenberg AFB, CA. Guardian Challenge, a four-day space and missile competition, is hosted annually at Vandenberg AFB, CA to test the wartime readiness of Air Force Space Command (AFSPC) professionals. 2002-05-09. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6629098. (Accessed September 21, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (2002-05-09) US Air Force (USAF) personnel assigned to the 30th Space Wing (SW), from Vandenberg Air Force Base (AFB) California (CA) pose for a group photograph with the teams mascot after winning the Schriever Trophy, during the Closing Ceremony for Exercise GUARDIAN CHALLENGE 2002, at Vandenberg AFB, CA. Guardian Challenge, a four-day space and missile competition, is hosted annually at Vandenberg AFB, CA to test the wartime readiness of Air Force Space Command (AFSPC) professionals. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6629098
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/6629098>.
Note: These citations are programmatically generated and may be incomplete.