“There is really no reason to panic. They are not poisonous, they do not bite or sting. There is really no danger to humans at all.”

So these bugs come out of the ground around here once every 17 years. They are absolutely everywhere for two months, and then that’s it for another 17 years. In 1990 I was in 7th grade. I remember trees and bushes around my school being filled with cicadas.
Local forest preserve site:
http://www.lcfpd.org/cicadas/