David Wexler, clinical psychologist and executive director, Relationship Training Institute San Diego, explains the causes of domestic violence during the Skills, Techniques, Options and Plans training program at the Education Center, Aug. 17, 2016. (Official Marine Corps photo by Cpl. Thomas Mudd/Released) - David Wexler, clinical psychologist and executive director, Relationship Training Institute San Diego, explains the causes of domestic violence during the Skills, Techniques, Options and Plans training program at the Education Center, Aug. 17, 2016. (Official Marine Corps photo by Cpl. Thomas Mudd/Released)