Lieutenant (LT), John S. Zambelli (left), and Corporal (CPL) Tom D. Casper, both USMC, 1ST Battalion, 3rd Regiment, 3rd Marine Division, prepare to teach a course on basic marksmanship with the 5.56mm M16A1 assault rifle, to a group of Philippine Marines during Exercise BALIKATAN 2000. BALIKATAN 2000 is a joint combined field training exercise held between US and Philippines forces, and is the largest of its kind since 1995

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. Lieutenant (LT), John S. Zambelli (left), and Corporal (CPL) Tom D. Casper, both USMC, 1ST Battalion, 3rd Regiment, 3rd Marine Division, prepare to teach a course on basic marksmanship with the 5.56mm M16A1 assault rifle, to a group of Philippine Marines during Exercise BALIKATAN 2000. BALIKATAN 2000 is a joint combined field training exercise held between US and Philippines forces, and is the largest of its kind since 1995. 2000-02-24. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6607350. (Accessed June 22, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (2000-02-24) Lieutenant (LT), John S. Zambelli (left), and Corporal (CPL) Tom D. Casper, both USMC, 1ST Battalion, 3rd Regiment, 3rd Marine Division, prepare to teach a course on basic marksmanship with the 5.56mm M16A1 assault rifle, to a group of Philippine Marines during Exercise BALIKATAN 2000. BALIKATAN 2000 is a joint combined field training exercise held between US and Philippines forces, and is the largest of its kind since 1995. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6607350
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/6607350>.
Note: These citations are programmatically generated and may be incomplete.