Thinking about those HD cameras pointing down below the aircraft. I'm sure it would be possible using current image processing and electo-optical direction technology (to say nothing of reversing cameras on cars or Hawk Eye at Wimbledon!) to provide information/direction during a rescue? Set it to track casualty/boat/winchman and the crew could set 'avoid' areas or 'capture' areas and let the system provide cues one way or another, or even send direct inputs into the flight control system (I know, a _lot_ of work would be required before the latter would be a goer).
Dunno if it would be a help (less things to worry about) or a hindrance (more to monitor or go wrong) but it could be explored.