US Air Force (USAF) AIRMAN First Class (A1C) Holly Hood (right) and STAFF Sergeant (SSGT) Sandra Sturkie with the 90th Space Wing (SW), F.E. Warren Air Force Base (AFB), Wyoming (WY), fire practice rounds to zero in their 5.56 mm M16A2 Automatic Rifle weapons, during a Guardian Challenge competition. Guardian Challenge, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB, California (CA)

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. US Air Force (USAF) AIRMAN First Class (A1C) Holly Hood (right) and STAFF Sergeant (SSGT) Sandra Sturkie with the 90th Space Wing (SW), F.E. Warren Air Force Base (AFB), Wyoming (WY), fire practice rounds to zero in their 5.56 mm M16A2 Automatic Rifle weapons, during a Guardian Challenge competition. Guardian Challenge, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB, California (CA). 2004-05-05. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662994. (Accessed November 17, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (2004-05-05) US Air Force (USAF) AIRMAN First Class (A1C) Holly Hood (right) and STAFF Sergeant (SSGT) Sandra Sturkie with the 90th Space Wing (SW), F.E. Warren Air Force Base (AFB), Wyoming (WY), fire practice rounds to zero in their 5.56 mm M16A2 Automatic Rifle weapons, during a Guardian Challenge competition. Guardian Challenge, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB, California (CA). Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662994
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/6662994>.
Note: These citations are programmatically generated and may be incomplete.