Did aliens do this to my tomatoes? Some kind of bug, perhaps? There's nothing obviously wrong with the plant. No bugs that I can see. And the Yellow Pear is almost touching the Hillbilly plant (although they are in different pots, and thus different soil) so I would think if it was a bug they would both have it. Any ideas?
(Update: I did some lunch time research and figured out that it's a water problem. Apparently these tomatoes were at a critical stage when I left them to fend for themselves over the Fourth of July. I'm sad to lose a few, but relieved to know that I can easily fix the problem for future tomatoes.)