Space.com has an interesting article forecasting a rise in UFO sitings due to the ubiquity of UAVs in the future. For those of you who haven’t heard of UAVs, they refer to Unmanned Aerial Vehicles, remotely piloted vehicles that are usually much smaller than conventional aircraft and are often quite unconventional looking. They’ve been used in combat as surveillance platforms for a decade or so, but their devlopment into weapons platforms is inevitable and has already been demonstrated. The article goes into some detail on various classes of UAVs as well as specific aircraft; it’s one of the better summaries of the technology that I’ve read.