... wasn't the idea that the Nimrod FMR.2 () could be used to deal with the 707 and Learjet sorties flown by the Argentine AF?
That was our understanding at the time. The impetus came from the Nimrod/707 encounter(s) . I don't recall much being said about Learjets but 30 years later the memory is slightly dimmed.
All that said, it made Fighter Affil sorties more interesting. SHAR pilots reacted less than sportingly to a call of 'Fox 2' from the MPA.