I especially like your last sentence. Too many people are concerned about "how it would look" instead of how it could help prevent something.I think situational awareness is very important. I try to look around and identify possible threatening situations/people were ever I go. I also represent myself in a confident manner. I also make eye contact and speak with everyone with in a distance around me that lets them know that I have seen them as well. I also trust the little hairs on the back of my neck. If in a store and someone makes me feel uncomfortable I will hang back and wait for them to leave or leave before they do. I have left work walking across the street and saw some fellows hanging out and turned and walked back to work and got an escort. I think by and large people are oblivious or don't want to embarrass themselves by being perceived as paranoid. I would rather live with the title PARANOID than die because I was self consciouses.