Argentine codes had been broken, and in March 1982 intelligence warnings about possible Argentine activity in the South Atlantic accumulated. The RAF began examining whether it was possible to carry out long-range operations with Avro Vulcan bombers using aerial refuelling. In 1961, a Vulcan had flown non-stop from the UK to RAAF Base Richmond near Sydney in Australia, a much greater distance, but that was with pre-positioned aerial tankers along the route, which would not be possible flying from Ascension. All consideration at this point was about how it could be done; no targets were identified in the Falklands or Argentina.