Navy Petty Officer 3rd Class Randy Stefan prepares to practice the "clench," a submission technique during an Army combatives class at G.J. Denich Gym, May 12. Combatives teaches military members self-defense tactics and is used as a self esteem and morale building tool. JTF Guantanamo conducts safe and humane care and custody of detained enemy combatants. The JTF conducts interrogation operations to collect strategic intelligence in support of the Global War on Terror and supports law enforcement and war crimes investigations. JTF Guantanamo is committed to the safety and security of American service members and civilians working inside its detention facilities.