While driving home from vacation recently, I made the mistake of checking the traffic websites and saw that there were multiple accidents and construction along our normal route of I-75 in the Atlanta area. As a result, we decided to avoid it all by going west of 285 through a bunch of roads we had never been on. Earlier that day, a dog urinated and defecated on the clothes I was wearing, so I had changed to what was easily reachable in the luggage. I ended up wearing blue cargo pants, a tucked-in dark grey t-shirt, and my LC9 OWB. At one point, we got off 285 at 139 (MLK Dr SW). As we waited at the light, we watched one car hit another. After getting through the intersection, I went back to check on the drivers, and ended up helping one guy whose car was stuck in the intersection, and he was bleeding) to the side of the road. I waited around first for the ambulance, then the fire trucks, and finally an Atlanta PD officer showed up. The LEO never seemed to care (or possibly notice) that I was OC while interviewing me. Later, while trying to get the dash cam off my windshield, I had my back turned to him, and the butt of the gun should have been easily visible based on where he was standing. No problems at all--no glances, bad vibes, etc. While waiting, I was aware that my wardrobe could be interpreted as someone trying (and failing) to look tactical, but it was really just a expedient choice after fouling my normal clothes (which had previously kept my gun concealed). On a side note, it was disappointing that we were only one of very few people who stopped to help, and we were the only ones who stayed around to talk to the LEO. Also, the driver of the newer car with all the supplemental air bags was unhurt, but the driver of the older car with just front air bags must have smashed his head on the windshield (maybe because of no seat belt).