Not a Dragonfly?

While wandering around Devil Creek I noticed this large (probably around two inches long) insect. While watching it I figured it was a type of dragonfly since it kind of had that look. You can also see that it had captured another insect and was eating it (something that dragonflies do).



However, once I got home and was trying to figure out what kind of dragonfly it might be, I noticed that its wings were folded behind its back. It is my understanding that all dragonflies rest with their wings out to the side.

Does anybody have an idea as to what kind of insect this might be?