I remember lightning bugs like that too. We'd go to the drive in movies when I was a kid and there was always a huge area for kids to play...swingsets and all kinds of stuff with a huge grass area the lightning bugs loved. Our folks would watch the movie while us kids had a blast running all over with tons of other kids. Not an adult in site...they were all watching the movie

. We'd terrorize the lightning bugs... getting their glow on our hands sometimes when we'd accidentally squish one. There were so so many of them then!