"... but I'm convinced that they're seeing our own large wasps that live here, which are for the most part harmless... It's actually not highly likely that they'll ever be established in Wisconsin just based on where they live in Asia. They are not found in the kind of climate that you can find in Asia that's similar to Green Bay." Also: "They're really big hornets, OK, and they have a painful sting, but many, many more people die of honeybees in Japan and China and Asia than murder hornets."
WMTV quotes UW-Green Bay Nature Sciences Professor Michael Draney.