Well, I thought the heat would be the main problem with summer running. And the occasional snake crossing the trail in front of me, though I've hardly seen any this year. But no, today I was attacked from behind by a **very** agressive rather large flying creature, which stung me in the back of my head! I still don't have much hair yet, 3 months out of chemo, and I must be exuding bad vibes these days or something, because I didn't even see this guy until he stung me and flew away when I swatted at him! And the worst part about this is that I was having a pretty decent run, considering the weather, and had planned for 4 miles, but cut the last 1.25 miles off to head for home right away. What a bummer! Did a little research and found it might have been a bald-face hornet, which is apparently very agressive. I guess I'll go back to wearing a cap in the woods!