How may lightning bugs (fireflies) does it take in a jar....?

Caught them and released them later, taught they would die if we didn't. A beautiful natural childhood memory. Here's a toast to our innocence then. Had no secret hideaway to be lit by them but once. Then, we used flashlights. Our father had set up a tent; we had begged to spend the night in it, my sister and I. He bet us we'd be back inside by 8 o'clock; we told him no, we were old enough now not to be scared. There we were, reading Nancy Drew by flashlight, and heard ground-lying twigs being broken with footsteps nearing. We decided it could be a bear. Just as we froze listening, we heard BWAHAHAHAHA, and screaming, raced the long way back into the kitchen. The clock stood at 8 sharp. His way of saying he didn't want us out there all night, and my most endearing memory of all the ways he teased and loved us so well.