I thought I could find the name of this dragonfly in one of my books or online. But I could not find it. So I'm going with Golden Darter.
08/01/07 Update - Per Nick Block on bugguide.net, "This is a teneral male Roseate Skimmer that has not obtained its distinctive reddish color yet."
So forget my original ID and let's go with immature Roseate Skimmer.