[S.E.R.T.SGT]

Here is one I have been thinking on for a while, and thought maybe it might be a help to get a "collective response" on. Did a search for this as well and didn't see anything, so I hope this is not one that was covered in a previous post and I missed. What is something that you do, that you feel, helps give you a "Tactical Advantage"? (Can be in different situations as well, perhaps going to the store at night, while in your home, while CCing, etc.) This can be anything from a general response, as in:"Always aware of my surroundings", to something more specific, as in "Make sure I'm not carrying my keys in the same hand I might need to get to my weapon with." The point being here to get us all thinking and share our wisdom. Nothing is to basic on this one. Looking for those responses where someone says: "That's a great idea, never thought of that one!" And hopefully learn something that we can add to our own personal "knowledge-base". Anyone have any input/thoughts?