At one ARSAG we had an excellent presentation about an AAR-supported SAR mission way out in the Atlantic successfully carried out by the US with its UK-based Jolly Greens supported by C-130 AAR. Well beyond the range of a land-based Sea King.
If it's the one I was involved in Beags, not strictly true!
Two Brawdy cabs (moi captain of R190) sat at Shannon as the casualty had come into range but were ordered to remain on the ground so that the UK based JG's and C130, which had taken rather a long time to get there but nonetheless had Presidential approval, overflew us in a fine display of capability. We could have been at the casualty a good hour or so before them. Don't believe all that you are told in official presentations!