Administrated by the DO, the paramilitary operations officers from the Special Operations Group are maintained in the Special Activities Center. They are highly skilled in weaponry; covert transport of personnel and material by air, sea, and land; guerrilla warfare; the use of explosives; assassination and sabotage; and escape and evasion techniques. They are prepared to respond quickly to myriad possible needs, from parachute drops and communications support to assistance with counter-narcotics operations and defector infiltration. SAC maintains a symbiotic relationship with the Joint Special Operations Command, and is largely run by former JSOC members.