I had a bit of an annoying run-in recently at my community center. I was checking in & since there were a few people in line, I had moved to the farther counter to do so. This older person comes right up behind me, with no regard to space, almost knocking over my oxygen machine to check in as I was trying to. I kind of muttered “personal space much” as I walked away to hang up my coat. He proceeded to follow closely but I think took a hint for a minute since he was on the other end of the coat rack. I then walked into the equipment room.