There's a protocol for this sort of thing. Certain information should be broadcast calmly and clearly, giving location, routes, warnings, number and disposition of rescuers – all that sort of thing. I’d done it scores of times in simulations and now, now that it really mattered, now that lives depended on it, I couldn’t remember a bloody word. Worried that my voice would let me down as badly as my memory, I switched off the music and opened my mouth. ‘Gooooooood morning, St Mary's! This is your early morning wake-up call.