US Air Force (USAF) STAFF Sergeant (SSGT) Scott Gero with the 90th Space Wing (SW), F.E. Warren Air Force Base (AFB), Wyoming (WY), crawls low to make his way out of the Trench Crawl during the obstacle course competition of Guardian Challenge. Guardian Challenge, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. US Air Force (USAF) STAFF Sergeant (SSGT) Scott Gero with the 90th Space Wing (SW), F.E. Warren Air Force Base (AFB), Wyoming (WY), crawls low to make his way out of the Trench Crawl during the obstacle course competition of Guardian Challenge. Guardian Challenge, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB. 2004-05-05. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662992. (Accessed October 18, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (2004-05-05) US Air Force (USAF) STAFF Sergeant (SSGT) Scott Gero with the 90th Space Wing (SW), F.E. Warren Air Force Base (AFB), Wyoming (WY), crawls low to make his way out of the Trench Crawl during the obstacle course competition of Guardian Challenge. Guardian Challenge, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662992
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/6662992>.
Note: These citations are programmatically generated and may be incomplete.