Situational awareness isn’t something anyone can do whenever they want–it takes practice. Even if you start paying attention to your surroundings, you still won’t notice if you’re being watched or followed if you don’t know what to look for. Situational awareness isn’t just observation, it’s also orientation.
What is orientation? It has to do with establishing baselines in your environment and looking for anomalies, knowing what sort of human behavior is normal and what isn’t, and planning your actions accordingly. For more details, check out this article from The Art Of Manliness. This is one of the best articles on situational awareness I’ve ever read.
The authors write, “There’s a scene at the beginning of The Bourne Identity where the film’s protagonist is sitting in a diner, trying to figure out who he is and why he has a bunch of passports and a gun stashed in a safety deposit box. Bourne also notices that he, well, notices things that other people don’t.” Follow the link below to keep reading.