I have no idea whether throwing yourself to the ground is the best thing to do in these circumstances, but it is what I do. And I suddenly hear myself screaming to everyone else to get down too, and words coming out of my mouth that I think might have been along the lines of: “Stay down, everyone! Give him what he wants!” In a language that may be French. Or Norwegian. Who knows. It is a gurgle of syllables: a sound of trapped terror.