Dr. David Spira, director of the National Center for PTSD, speaks to the audience and shares the dangers of post-traumatic stress disorder and how it can be treated during the PTSD Workshop at the Chaplain Joseph W. Estabrook Chapel aboard Marine Corps Base Hawaii, Aug. 28, 2013. (U.S. Marine Corps photo by Lance Cpl. Matthew Bragg) - Dr. David Spira, director of the National Center for PTSD, speaks to the audience and shares the dangers of post-traumatic stress disorder and how it can be treated during the PTSD Workshop at the Chaplain Joseph W. Estabrook Chapel aboard Marine Corps Base Hawaii, Aug. 28, 2013. (U.S. Marine Corps photo by Lance Cpl. Matthew Bragg)