Participants of the 2019 High Intensity Tactical Training Championship celebrate completing the competition, which spans over four days, and includes seven challenges testing the athletes’ physical and mental fortitude, aboard Marine Corps Base Quantico on Sept. 12, 2019. Competitors from all across the Marine Corps battle for the title of HITT Champion. - Participants of the 2019 High Intensity Tactical Training Championship celebrate completing the competition, which spans over four days, and includes seven challenges testing the athletes’ physical and mental fortitude, aboard Marine Corps Base Quantico on Sept. 12, 2019. Competitors from all across the Marine Corps battle for the title of HITT Champion.