A paper wasp, possibly Polistes fuscatus. They’re not especially aggressive unless you approach their nests - this lady got into the house somehow and landed on my leg, so I just shook her off outside. The Wikipedia article on P. fuscatus is a wild ride… their social structure and behavior is a mess.
Close up of an unidentified species of wasp.A wasp is any insect of the order Hymenoptera and suborder Apocrita that is neither a bee nor an ant. The Apocrita have a common evolutionary ancestor and form a clade; wasps as a group do not form a clade, but are paraphyletic with respect to bees and ants.