[Eastlund87] Bernard J. Eastlund, Method and Apparatus for Altering a Region in the Earth's Atmosphere, Ionosphere, and/or Magnetosphere, U.S. Patent 4,686,605, 1987. [This patent describes methods for using high frequency radio signals, which might be powered with the use of a 42,000 lb. air-mobile MHD generator, to disrupt microwave satellite communications as well as other land-, air-, and sea-based communications.]