What is going on here?

I came home after a couple days out of town and found this! There were two smaller tomatoes with the same problem. It could be tomato hornworms, but after extensive searching on the plant, I can't locate the actual worm. Tonight I will go out there with my flashlight to see what is happening. This is a lot of damage so I know that whatever it is, it's BIG!

Oh No! Late Blight.

We have a serious problem here.  Late blight has struck 3 of my 5 tomato plants.  Some sources say this means certain death, but I'm going to play my odds and try a copper fungicide spray.  It's an organic spray, but can be damaging to the soil.  Since my vegetables are in containers I'm not as worried about it building up in the soil.  Late blight has been a huge problem this year due to the cool, damp weather and possible contamination of plants by "big box" stores.  Unfortunately, I bought some of my plants from "Big Box Lowes".  Next year I will definitely buy my plants from local greenhouses or start my own seedlings at home.