Sior AIRMAN Vinct G. Ouchana, USAF, (right) with a Colt 5.56 mm M16A2 rifle with an M203 40 mm grade launcher attached, and AIRMAN First Class Ryan S. Overcash, USAF, with a Colt 5.56 mm M16A2 rifle, 341st Security Forces, Malmstrom Air Force Base, Montana. The team races toward a bunker to begin the marksmanship evt of GUARDIAN CHALLENGE 2001. GUARDIAN CHALLENGE, the world's premier space and missile competition, is a four-day evt hosted annually at Vandberg AFB, CA "to recognize the best and demonstrate the commands warfighting skills. GUARDIAN CHALLENGE creates competition-tough crews; improves readiness and combat capabilities through preparation, innovation and sharing...

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. Sior AIRMAN Vinct G. Ouchana, USAF, (right) with a Colt 5.56 mm M16A2 rifle with an M203 40 mm grade launcher attached, and AIRMAN First Class Ryan S. Overcash, USAF, with a Colt 5.56 mm M16A2 rifle, 341st Security Forces, Malmstrom Air Force Base, Montana. The team races toward a bunker to begin the marksmanship evt of GUARDIAN CHALLENGE 2001. GUARDIAN CHALLENGE, the world's premier space and missile competition, is a four-day evt hosted annually at Vandberg AFB, CA "to recognize the best and demonstrate the commands warfighting skills. GUARDIAN CHALLENGE creates competition-tough crews; improves readiness and combat capabilities through preparation, innovation and sharing.... 2001-05-07. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6600355. (Accessed September 26, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (2001-05-07) Sior AIRMAN Vinct G. Ouchana, USAF, (right) with a Colt 5.56 mm M16A2 rifle with an M203 40 mm grade launcher attached, and AIRMAN First Class Ryan S. Overcash, USAF, with a Colt 5.56 mm M16A2 rifle, 341st Security Forces, Malmstrom Air Force Base, Montana. The team races toward a bunker to begin the marksmanship evt of GUARDIAN CHALLENGE 2001. GUARDIAN CHALLENGE, the world's premier space and missile competition, is a four-day evt hosted annually at Vandberg AFB, CA "to recognize the best and demonstrate the commands warfighting skills. GUARDIAN CHALLENGE creates competition-tough crews; improves readiness and combat capabilities through preparation, innovation and sharing.... Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6600355
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/6600355>.
Note: These citations are programmatically generated and may be incomplete.