Systems and methods are described that provide global positioning system enabled wireless communications. Upon emplacing the connection head at a base seat, the slab is stopped from moving by a stopper, and the conduction pieces are exposed and are contacted with spring leaves of the base seat, thereby constituting a close-circuit status. An externally-threaded tubular portion extends from the nut in surrounding relation to the insulator and terminating, short of the insulator end, in a cap that is disposed in spaced relation to the insulator. The processor instructs the transmitter to transmit the transponder signal based on the threat zone information and the sensed position of the ground-based unit.