During my career with Flybe in the UK carried quite a few organs for transplant from A to B. Yes they were packed in a cool box, most often carried on the flight deck as cabin crew sometimes not so keen to have coolbox in their galley!!. Brought to the aircraft before departure by the police and collected from the aircraft by the police waiting at t'other end, and ready with the blue lights.. Perhaps surprisingly, but pleasingly so, it always worked like clockwork. Nice to be able to help albeit in a small way.