drills drills drills
***If TEN schools ran Alien Invasion drills, and over the next year 7 of them had ACTUAL alien invasions/ attacks, then the REST of the schools in the country would start doing Alien Invastion drills, and then it would happen in 70% of those schools drilled.
100% of the schools NOT having alien invasion drills will NOT experience invasions.
https://www.manchestereveningnews.co.uk/news/greater-manchester-news/trafford-centre-terrorist-training-video-11309172