A method for monitoring a geographic area that using a plurality of unmanned mobile vehicles. Each unmanned mobile vehicle may be programmed with an operational plan to cover a specific subregion of said geographic area. Each unmanned mobile vehicle may be used to obtain visual images of its associated said subregion during operation. A surveillance system is also disclosed for monitoring a geographic area. The system includes a plurality of autonomously operated unmanned mobile vehicles. Each vehicle includes an onboard system that executes an operational plan to enable the vehicle to traverse a specific subregion of the geographic area. Each onboard system further includes a monitoring system to obtain visual images of its associated subregion.