Charged particle instrumentation that will be flying on six spacecraft in t
he heliosphere between 1 and 90 AU during 2001-2004 will provide a global v
iew of the interplanetary medium that has not heretofore been available. Co
mparative analyses of the data that will be obtained will provide new under
standing of the global evolution of heliospheric features such as traveling
shock waves, coronal mass ejections, solar activity-produced particle inje
ctions, and anomalous cosmic rays.