Ann, I'm not sure what it was but I zoomed in and cropped the photo, so that insect may not have been quite as large as it looks in the photo. It might be one of the large dragonflies that we've seen all summer, possibly the Carolina Saddlebags: http://www.pbase.com/tmurray74...
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!