Here is one I took in Papua New Guinea. It was on a flight from one island to the other. The pilots came to me and said they are sorry but due to a medical emergency they had to take a patient to the other island and were about to use my seat and they are very sorry and ask my permission to put me on a jump-seat. That didn't sound good - I though it meant I had to wait for the next available plane and hope it will have a free seat - but medical emergency! so I said ok.. So they said "Come with us"..
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