Excellent, Mike!
Yes, do tell us more: these are good.
Once again, perhaps there is a lesson to be learned here. I remember one of the Bell X1 pilots (was it Everest or Scott Crossfield) wrote that when an emergency breaks out our first impulse is always to take instant action, when for best outcome we ought to take just a bit more time to assess the situation before taking action. In this case, the assumption of being hit when the true cause of the emergency was exploding rations.
In regard to the Shackleton, I remember, as a child of about 14 attending (probably the last) airshow at Liverpool Speke airport. An RAF Shackelton staged a mock attack on an imaginary submarine apparently sailing across the middle of the aerodrome.
What an impressive sight. Suddenly those big engines revved to combat power, rising from a deep, throaty drone to a howl and that huge aeroplane (a Lancaster derivative after all), began to kick imaginary hell out of the imaginary submarine, banking steeply after each run to come back and have another go.
Very best wishes,
Broomstick.