HZE particles in the magnetosphere is not understood, but a hazard to people and electronics would arise if a sufficiently large intensity of HZE particles were to be produced. This point needs to be clarified. 3. If the fate of Ar+ is understood, including the energization aspects, one can predict the alteration of the trapped radiation, including the plasmasphere and ring current. The alterations may lead to various effects on the atmosphere, of which probably the most important is the increased radiation hazard to spacecraft. Other effects that need investigation are possible communication interference, power line transients, and changes in airglow and in stratospheric ozone. In the short term, these action items are largely paper studies, but they may include the observation of targets of opportunity.
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