Ibex project

https://en.wikipedia.org/wiki/Project_Dark_Gene#Project_Ibex

Project Ibex
Project Ibex was closely linked to Project Dark Gene. The same airfields were used and operations were often run in conjunction. In essence they can be considered the same operation, each with separate and overlapping objectives. One of the advantages of operating them together was the ELINT data that could be gathered when Soviet air defences were activated by a Project Dark Gene aircraft that was detected. The resulting emissions and activity would be recorded by Project Ibex aircraft on the Iranian side of the border.[1]

Funded by the Shah, the listening posts were constructed in Northern Iran by the CIA.[5] After the Iranian Revolution, Iran maintained the facilities in "impeccable condition" despite having little or no knowledge about how to operate them.[6] With the potential to provide information about Iraqi troop movements, CIA official George W. Cave advised Iran's interim government to make use of the system.[7]
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