A silhouette of members of the 52nd Fighter Wing, 606 Air Control Squadron, overseeing the main gate in their M998 High-Mobility Multipurpose Wheeled Vehicle (HMMWV) at Spangdahlem Air Base, Germany. The crew is armed with Colt 5.56 mm M16A2 Rifles and an FNMI 5.56 M249 Squad Automatic Weapon (SAW) is mounted on the HMMWV. Increased security measures were implemented after terrorist attacks on the World Trade Centers Twin Towers in New York and at the Pentagon, when hijackers deliberately flew civilian airliners into the buildings, on the morning of 11 September 2001

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. A silhouette of members of the 52nd Fighter Wing, 606 Air Control Squadron, overseeing the main gate in their M998 High-Mobility Multipurpose Wheeled Vehicle (HMMWV) at Spangdahlem Air Base, Germany. The crew is armed with Colt 5.56 mm M16A2 Rifles and an FNMI 5.56 M249 Squad Automatic Weapon (SAW) is mounted on the HMMWV. Increased security measures were implemented after terrorist attacks on the World Trade Centers Twin Towers in New York and at the Pentagon, when hijackers deliberately flew civilian airliners into the buildings, on the morning of 11 September 2001. 2001-09-12. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6598513. (Accessed June 24, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (2001-09-12) A silhouette of members of the 52nd Fighter Wing, 606 Air Control Squadron, overseeing the main gate in their M998 High-Mobility Multipurpose Wheeled Vehicle (HMMWV) at Spangdahlem Air Base, Germany. The crew is armed with Colt 5.56 mm M16A2 Rifles and an FNMI 5.56 M249 Squad Automatic Weapon (SAW) is mounted on the HMMWV. Increased security measures were implemented after terrorist attacks on the World Trade Centers Twin Towers in New York and at the Pentagon, when hijackers deliberately flew civilian airliners into the buildings, on the morning of 11 September 2001. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6598513
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/6598513>.
Note: These citations are programmatically generated and may be incomplete.