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ECHO
HMS Echo now seems to be at edge of Ocean Shield's search area doing a much reduced speed of 7 knots
Most likely getting ready for the go ahead. They will not want any submersibles in the area until the Black Box batteries have totally died or they have a really good idea where the plane is.
The weakening signals will give them a more accurate location.
I think the retired AM is doing a great job. He will not be rushing anything that is for sure.