I was shown into a room. A red room. Red wallpaper, red curtains, red carpet. They said it was a sitting-room, but I don’t know why they’d decided to confine its purpose just to sitting. Obviously, sitting was one of the things you could do in a room this size; but you could also stage operas, hold cycling races, and have an absolutely cracking game of frisbee, all at the same time, without having to move any of the furniture.It could rain in a room this big.
Suddenly, there was an enormous flash of light, the brightest light I have ever seen or that I think anyone has ever seen. It blasted; it pounced; it bored its way into you. It was a vision which was seen with more than the eye. It was seen to last forever. You would wish it would stop; altogether it lasted about two seconds.[Witnessing the first atomic bomb test explosion.]