Fireflies!

 One of my fondest childhood memories is spending the evening outside with my younger brother catching fireflies!  We would catch them and put them in jars and of course some always managed to get smeared on our clothes (sorry little firefly).  I have noticed this summer that I do not see them anymore!  Where have they gone? I would love Sean to be able to run around the backyard and try to catch them!  I would hate for him not to experience the magic of fireflies twinkling in the dark!