Photo: El Chapo under arrest  In a joint Mexican and US operation, Joaquin 'El Chapo' Guzman, the head of Mexico's Sinaloa drug cartel, was captured Saturday at beach resort in Mazatlan, Mexico. Guzman is considered one of the most powerful drug traffickers in the world. Guzman faces multiple federal drug trafficking indictments in the U.S.,  and is on the Drug Enforcement Administration's most-wanted list. His drug empire stretches throughout North America and reaches as far away as Europe and Australia.