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A former Marine Corps radio operator was one of the 12 people killed Wednesday night when a Marine veteran shot up a bar in Thousand Oaks, California, Task and Purpose reports. Dan Manrique—a 33-year-old veteran and head of the Ventura County chapter of veterans non-profit Team Red, White & Blue—was reportedly killed when 29-year-old Ian David Long opened fire inside Borderline Grill & Bar. Manrique’s childhood friend, Jacklyn Pieper, told the website that Manrique was meeting a group of friends at the bar when “all hell broke loose” inside. “His whole plan was to see the world and get leadership experience, and he was able to do that in those four years [in the Corps],” Pieper told the website. “Everything he did was selfless.” Manrique was reportedly deployed to Afghanistan in 2007 with the 26th Marine Expeditionary Unit, serving with the 2nd Combat Engineer Battalion, 2nd Marine Division. The website reports he was an “active member” of his local veterans community. “He was all about giving back to the veterans community and creating that community,” Pieper said. “His whole life was based around helping others.”