Oxford tower lost sight of a Cirrus aircraft half a mile from the airport coming in for a landing. This obviously triggered a large response from all the emergency services. After an extensive search and all kinds of personnel in the woods searching, the plane was located. Well, the plane was located alright, at Robertson Field safe and sound after doing touch n go practices. Umm, how do you lose sight of a plane that landed and took off, and why didn't the pilot check with the tower upon departure? Oxford is NOT that busy an airport to miss a plane taking off. Somebody has some explaining to do. Besides emergency services response, a few planes coming in were asked to do a brief circle around the airport vicinity to check for a downed aircraft. Yep, somebody will have to explain this one..