Developing situational awareness begins simply and slowly. You begin by making a conscious effort to take notice of everything going on around you. Who is close by? What do they look like. This means describe to yourself their appearance. Male or female. Adult or juvenile. Try to estimate age. Height and weight. Nationality/ethnicity. Hair color. Eye color. Complexion. Is it pale, tanned, dark, etc. How are they dressed. Does their attire match the climate and geography. For instance if I was to describe myself it would be like this: Male white approx 6ft 200+ brown/blu. This gives the immediate information of what I look like. I would then add additional identifying info. Such as I am balding, have a mostly white beard and mustache, no visible marks, scars or other unusual physical characteristics. Get into the habit of doing this and it will become second nature without having to think about it. Next you should pay attention to what people around you are doing. At this point you are looking for anybody who might be a threat to you. You probably won't be very good at this. It takes practice and experience to get really good. Don't worry about it. You should also pay attention to your surroundings. If you need it is there any cover close by or will you have to go some distance to get to it. Find it, identify it as a safe place and store the information in case you need. Always be thinking and planning. It will be become habit and you will be able to do it without using all your attention to do it. Just remember, you want to know who and what is around you all the time. If you have to fight do you have enough room or are you confined or limited in your movements. But more important than having room to fight, is the way open to disengage and get away. Just remember you want to be able to go home. Only fight if you have to. More to come.