BORDER INSPECTION WITH AERIAL CAMERAS

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for controlling access to physical areas. One of the methods includes receiving, from at least one of one or more sensors, data identifying a vehicle at a border crossing station, determining current weather conditions for the border crossing station, evaluating whether the current weather conditions are favorable to inspection of the vehicle by a mobile camera, determining that the current weather conditions are favorable to inspection of the vehicle by a mobile camera, and in response to the determination that the current weather conditions are favorable to inspection of the vehicle by a mobile camera, providing at least one of one or more mobile cameras with instructions to cause each of the at least one of the mobile cameras to inspect the vehicle.