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The footage is blurry, but notice the body language of the attacker. He is deliberately trying to appear relaxed and inconspicuous, but he is immediately recognizable as a potential threat if you are alert. First, he is standing with his back to the wall, tensely fixed to that spot. Second, he is constantly looking back…
When you are out, be aware of what is called “baseline behavior”. This means the type of behavior that is normal for any particular situation or environment. For instance, at a cafe, the baseline behavior would be people chatting, reading, working on a laptop or tablet, etc. Someone sitting alone, perhaps not even having tea…