And, for a nonpharmaceutical intervention -- have them play a bit of Tetris. https://www.psych.ox.ac.uk/news/tetris-used-to-prevent-post-traumatic-stress-sympt

And, for a nonpharmaceutical intervention -- have them play a bit of Tetris. https://www.psych.ox.ac.uk/news/tetris-used-to-prevent-post-traumatic-stress-symptoms https://www.psych.ox.ac.uk/news/tetris-used-to-prevent-post-... I can confirm from personal experience that this works, and that it isn't specific to Tetris. Other visual/spatial puzzles are similarly effective.