OOOO! A cicada! My youngest son saw one of these a couple days ago and totally freaked out at the HUGE bug.
They can be a little intimidating I guess. To me the sound has always meant school is about to start. Ahhh... what neato memories!
Oh and my favorite part -- they shed (molt) an almost perfectly intact husk of exoskeleton... You can find them stuck all over the trees in the fall time... We used to LOVE sticking them on people and scaring them to death. I uh.. think that traditionally the boys used to chase the girls around with the things but I wasn't your stereotypical little girl.