Tara, awe, that is horrible. I guess some areas have really bad, big yellowjackets. I have had dealings with ones, but they don't devastate an entire hive, I feel badly for you. I am sure you will get good responses on how to protect your hive from people who deal with the really bad ones. I think like JP said, it must be the Giant Japanese hornet, it sounds like a really nasty, the nastiest of the nasty. Good luck, I wish you well, have a wonderful day, Cindi