 In early 1982, the ISA was needed to support a SIGINT mission in El Salvador, a mission that the CIA, the NSA and INSCOM were not able to accomplish.The task was submitted to the U.S. Army Special Operations Division (SOD), which started Operation Queens Hunter.Operating from a Beechcraft model 100 King Air flown by SEASPRAY (a clandestine military aviation unit) based in Honduras, ISA SIGINT specialists monitored communications from Salvadoran leftist guerrillas and fascist death squads, providing intelligence which helped the Salvadoran Army defend against guerrilla attacks.