Law Enforcement Around The U.S. Fight The Street Gang MS-13

ABILENE, TX - JANUARY 11: A guard on duty at the Robertson Unit maximum security prison facility opens the main entry gate on January 11, 2006 in Abilene, Texas. Part of the Texas Department of Criminal Justice, the Robertson Unit is a 2500 bed facility located a few miles west of Abilene, Texas. The prison, also known as "Rockin Robin" for it's history of violence in the 1990's, has the full range of security categories ranging from low to maximum security prisoners including members of Mara Salvatrucha 13 or MS-13, the violent Central American street gang. (Photo by Robert Nickelsberg/Getty Images)