The dream:
You stretch and look up from your computer screen and out of the window, blinking as your eyes adjust to the light. You hear a faint rumble which gets louder, becoming uncomfortably loud. A fighter jet, zipping past the window and into the distance.
You hear gasps throughout the office but pay no attention because you see another, slower plane passing far away over the city centre – you can’t be sure, but there seems to be something falling from it.
You look back at your colleagues, saving your eyesight as the flash bathes the room in bright light, you spin around in time to see the beginnings of a familiar shaped cloud rising from where a city used to be.
Still, it’s only a dream – right?