 The success was such that the operation, planned to last a month, ran for more than three years.More aircraft were deployed, and eventually included eavesdropping on Honduran guerrillas too, as well as Nicaraguan Army units fighting against the Contras.The ISA has also conducted an operation to search for US MIAs (soldiers reported as Missing In Action) allegedly held in South-East Asia in secret POWs camps in the 1980s.