A character of South Korean nationality, Jung Park’s natural proficiency for computers drove him to serve his mandatory term in the ROK Army immediately after graduation. Park’s high scores on electronics screening made him eligible for entry into the 1st Anti-Guerrilla Group. For two years, Park served as part of the 15th Security Battalion’s signals unit. In 2004, Park received a transfer to the ROK Army’s 5th Special Forces Brigade (Airborne). During his time as a Black Dragon, Park earned top marksmanship decorations in every long-range category, as well as SCUBA and parachute qualifications. After three years with the 5th SFB, Park volunteered for the 707th Special Mission Battalion, South Korea’s elite counter-terrorist and quick-reaction unit. During a joint training mission with SAS and 1st SFOD-D, Park caught Ding Chavez’s eye for his mix of electronics and combat expertise. When Park’s two year term with the 707th concluded, he was immediately invited to join Rainbow.