The Arlington Police Department is in the first part of its experiment in using unmanned aircraft to assist in law enforcement.

The department has been testing and evaluating two battery-operated, remote-controlled aircraft over a small, restricted airspace near Lake Arlington Dam, away from populated areas.

The aircraft are flown only for daylight operations and within a small, restricted airspace. The aircraft have to remain within the pilot's line of sight and fly 400 feet above the ground level.