Abstract: A method of operating a facility includes identifying, by a controller, a ground vehicle approaching a restricted access area, and determining, by the controller, if the identified ground vehicle is authorized to enter the restricted access area. The controller permits the identified ground vehicle to enter the restricted access area when the controller determines that the identified ground vehicle is authorized to enter the restricted access area. The controller determines if an object other than the identified ground vehicle is approaching the restricted access area with the identified ground vehicle, and activates protective action when the controller determines that the identified ground vehicle is not authorized to enter the restricted access area or that an object other than the permitted ground vehicle is approaching to enter the restricted access area with the permitted ground vehicle.