Families ages 3 and up. Register children and adults; children must be accompanied by a registered adult. Come celebrate summer’s natural night lights as we learn about these bioluminescent beetles. Activities include: bug hunts, games, crafts, walks, and talks about fireflies. Bring a picnic blanket and dinner as we wait for sunset and the natural lights to come out. Cancelled if raining. For information: 703-228-6535. Meet at Fort C.F. Smith Park, 2411 N 24th Street, Arlington. Registration Required: Resident registration begins at 8:00am on 5/14/2019. Non-resident registration begins at 8:00am on 5/15/2019.