Deep C
My advice, although only being a private helo pilot, if you are seriously after the 'right' answer, would be to contact a SAR unit ( such as RAF Wattisham) and ask one of the crews.
It appears you're more likely on here to get mistakenly fragged for making accusations when you are in fact just asking a question.
I'm sure a decent search engine could give you a URL or two to try. You might try looking up RNAS Culdrose or RAF Wattisham as they are slightly better known.