I think I'm getting a feel for what it takes to get a good firefly picture.
here's what I've got so far:
-find a place with a lot of them.
-figure out a way to get them against a neutral backdrop
-shoot a much higher iso than you think you should.
-take more exposures than you think you need.
-realize that what you see with your eyes and what the camera sees are going to be drastically different.