Over the past several months, I've been around a lot of wasps and I've never had one come at me or show aggression. I have yet to be stung by one. Usually, when I'm photographing them, they fly away quickly, unlike bees who often let me take picture after picture as though I belong there and am part of the scenery. I've only recently been able to get close to yellowjackets and wasps. Today, I encouraged a yellowjacket to crawl on my hand from a flower. I watched closely to see if he was showing fear; I only saw curiosity.