Exclusive: Gangs Spreading In The Military CBS News Talks To The Family Of A U.S. Soldier Killed In Gang Initiation Evidence of gang culture and gang activity in the military is increasing so much an FBI report calls it "a threat to law enforcement and national security." The signs are chilling: Marines in gang attire on Paris Island; paratroopers flashing gang hand signs at a nightclub near Ft. Bragg; infantrymen showing-off gang tattoos at Ft. Hood. Gang activity clues are appearing in Iraq and Afghanistan, too. Gang graffiti is sprayed on blast walls even on Humvees. Kilroy the doodle made famous by U.S. soldiers in World War II is here, but so is the star emblem of the Gangster Disciples. The rise in gang activity coincides with the increase in recruits with records. Since 2003, 125,000 recruits with criminal histories have been granted what are known as "moral waivers" for felonies including robbery and assault.