Vihn Cayton, Joint Base Myer-Henderson Hall antiterrorism

Vihn Cayton, Joint Base Myer-Henderson Hall antiterrorism officer, speaks to Marines during a Labor Day weekend safety stand down held at the Pentagon auditorium Sept. 3. Speakers from the FBI, the Department of Homeland Security and the Bureau of Alcohol, Tobacco, Firearms and Explosives, discussed various active shooter events – including incidents at the Holocaust Museum, Pentagon, Family Research Council and Navy Yard – that have occurred in the National Capital Region during recent years. (Joint Base Myer-Henderson Hall PAO photo by Damien Salas)