Disclosed is a drive circuit for a panel display device for driving light-emitting devices arranged at respective intersections between a plurality of data lines and a plurality of scan lines. The flight information preferably includes the aircraft’s aircraft ID, current three-dimensional position, and intended path. Methods for preparing an attenuated avian pneumovirus composition are also described. The changes are then ordered according to their ranks, and each change is transmitted to remote storage systems for remote duplication of the change. From the detected fields, the relative disposition of the probe with respect to the reference field transducers is determined.