The publication in full of secret plans following the death of the Queen lays out for the first time in extraordinary detail how the world will wake up to a new era.
Fevered phone calls, a rush to lower flags within 10 minutes, hundreds of dignitaries arriving from across the world and intense police fears over the capital city quite literally becoming over capacity, encapsulates what a truly momentous event it will be.
The Queen has been faced with the bizarre and most likely uncomfortable situation of having her funeral plans published to the world, causing more than a degree of frustration among palace courtiers and officials.
Whitehall is to launch an immediate inquiry into the leak of closely guarded plans, long known by a select band of officials and specialist reporters, jointly bound by a shared understanding of the dangers of such revelations.
Today across government departments and the security services there will be very real fears over anything that could derail the organisation of such a seismic global event.
Privately there are obvious concerns for the Queen over yet another blow after such 18 months largely spent in isolation, scandal and drama between her children and grandchildren and saying goodbye to her dearly beloved husband Prince Philip.
Those guilty of such an exposure of intensely private information may wish to ask themselves what their motives could possibly be.