Alliance of Twelve

The Alliance of Twelve is a fictional terrorist organization in the television series Alias. It is an organization involved in the trade of intelligence and weapons. The organization was founded by Alain Christophe and is divided into 12 sections, named SD-1 through SD-12. "SD" stands for Section Disparu—literally, disappeared section or hidden section. The first two seasons of Alias focus mainly on events within the SD-6 section, headed by Arvin Sloane and based in Los Angeles.