Mark Gletko, the boxing coach for the installation’s Mixed Martial Arts Fight Club 29, teaches practical application during a self defense class as part of Teen Dating Violence Awareness month in building 1707 aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Feb. 22, 2018. The class was held to give parents and their children the opportunity to learn how to defend themselves in a dangerous situation. (U.S. Marine Corps photo by Lance Cpl. Jennessa Davey) - Mark Gletko, the boxing coach for the installation’s Mixed Martial Arts Fight Club 29, teaches practical application during a self defense class as part of Teen Dating Violence Awareness month in building 1707 aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Feb. 22, 2018. The class was held to give parents and their children the opportunity to learn how to defend themselves in a dangerous situation. (U.S. Marine Corps photo by Lance Cpl. Jennessa Davey)