Association of Old Crows
When I first joined the RAF, dire threats would appear at frequent intervals in SROs, concerning membership of 'The Red Coat Roost of the Association of Old Crows'. Which didn't actually mean a lot to anyone; if it hadn't been for some reference to P&SS, we might have asked for an explanation. But even then we decided it wouldn't be in our best interests to attract the attention of the spooks....