"How about the train bombers who carried their explosives onto the trains in backbacks?"
That wasn't 'bomb-making equipment', that was actual bombs. Someone with a bomb in a backpack is hardly likely to agree to a search.
Someone with a bomb in a backpack is hardly likely to agree to a search.
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OK, so I'm a terrorist bomber, carrying a bomb in a backback. Nice to know that if I don't agree to a search I can carry on my way, unmolested.