The American way
The monotone and loud screaming BRACE BRACE BRACE is the American way of doing things. Like the police screaming GET DOWN GET DOWN GET DOWN over and over at people who may have committed a minor offense. And look at the TSA security area in the US: Loud and monotone and continuous instructions to "take off your belts, take off your shoes, laptops out" etc.. etc.... In all other countries this is done silently and without loud instructions, and it works just as well, if not better.