It's definitely not a Class D or E - I've toggled both of those (and all the other options) off and on. This is considerably larger, many times larger, than any of the Class E airspaces.
Thanks. Why would it show up when I'm flying with the remote and an OTG cable connection to my iPad? I don't remember seeing that icon show up before, and suddenly it's there today.
There's a huge green circle on my map. By way of comparison, you can see two airports on the map as well, but this green circle takes up about 1/2 of the state of Virginia. What is this?