Shack Something similar. We now get a lot more military flights than in the past with sometimes ambiguous call signs, e.g. HAF is either Greek Air Force or Hungarian; IAF is Italian or Indian.
I was sat with a trainee when FAFnnnn came up, trainee dived in with a long, illlegal, spiel in French. Stunned silence from the other end then Eastern Scandinavian voice said "Very nice, now in English please". Was he French or Finnish, take your pick.
Lon More, the countdown continues