GWEN is a superb system, in combination with cyclotron resonance, for producing behavioural alterations in the civilian population. The average strength of the steady geomagnetic field varies from place to place across the United States. Therefore, if one wished to resonate a specific ion in living things in a specific locality, one would require a specific frequency for that location. The spacing of GWEN transmitters 200 miles apart across the United States would allow such specific frequencies to be 'tailored' to the geomagnetic-field strength in each GWEN area.