US Air Force (USAF) F.E. Warren Air Force Base (AFB), Wyoming (WY), mascot "The Wrangler" gets his team fired up during the opening ceremony to kick off this years Exercise Guardian Challenge at Vandenberg Air Force Base (AFB), California (CA). Guardian Challenge is the world's premier space and missile competition and a four-day event hosted annually at Vandenberg Air Force Base (AFB), CA

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. US Air Force (USAF) F.E. Warren Air Force Base (AFB), Wyoming (WY), mascot "The Wrangler" gets his team fired up during the opening ceremony to kick off this years Exercise Guardian Challenge at Vandenberg Air Force Base (AFB), California (CA). Guardian Challenge is the world's premier space and missile competition and a four-day event hosted annually at Vandenberg Air Force Base (AFB), CA. 2004-05-03. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662684. (Accessed September 18, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (2004-05-03) US Air Force (USAF) F.E. Warren Air Force Base (AFB), Wyoming (WY), mascot "The Wrangler" gets his team fired up during the opening ceremony to kick off this years Exercise Guardian Challenge at Vandenberg Air Force Base (AFB), California (CA). Guardian Challenge is the world's premier space and missile competition and a four-day event hosted annually at Vandenberg Air Force Base (AFB), CA. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6662684
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/6662684>.
Note: These citations are programmatically generated and may be incomplete.