Attack of the hornets

So I was out mowing the lawn and had something attack my back. Thinking it was just a bee or wasp, I just continued on. Well, Sunday we were walking through our yard and found this hanging in the tree. We weren't sure what it was or what kind of bugs these were, so Justin took pictures and did some research. Come to find out, we have a bald faced hornets nest in our pear tree. It was by this tree where I got attacked. Now I'm concerned to send my kids out to play, but hopefully we will be able to take care of this soon. I had to share this picture with you cause I thought their hive is interesting. Supposedly it is made from bark and saliva. What weird looking bugs.