More wonderful news: Blossom end rot on tomatoes?

After mending the fence from the deer damage, I started harvesting some of the tomatoes and cucumbers.  While picking tomatoes, I found that a number of the Roma tomatoes appear to have blossom end rot.  Interestingly enough, it's not all of them, just some.  There are also a few that have some sort of critter nibbling on the tomato near the stem (especially a few of the tomatoes with a blush).

Fun stuff.  Thankfully, it doesn't look like a majority of the Romas have this problem.