It is the Emergency Alerts. I didn't see it in Manage Apps, because I was only looking at my downloaded apps. I realize now that short of rooting, I'll just be stuck with it.
I'm very new to the smartphone world, so it's taking some trial and error to get things situated. I change around the home screens almost daily. I'll get the hang of it soon.
I know this is off-topic, but since I seem to have a captive audience, has anyone else had problems with Droid 2 Global screen freezing? I can unfreeze by putting it to sleep and back, but some days it's extremely frequent and annoying, along with the left sliver of the screen being unresponsive. That's apparent when I try to move an icon from one home page to the left.
Thanks again for the replies.