Spy Drones Spotted in Saint George

I just got off the phone with my wife a few minutes ago.  She told me she just spotted a solid white plane-like device circling our house in Saint George, SC, and that when she stopped and stared at it, it flew off.  It sounds like a government spy-drone to me.  My wife is a conspiracy-theorist by no means, yet she spotted something that only conspiracy-theorists would know about.