Current satellite communications bandwidths are already inadequate to support all possible current technologies.  Military planners, intelligence analysts, and Soldiers on the ground all suffer as a result (although, in most cases unknowingly).  A massive revolution in communications technology is required to support future capabilities.

By 2040 we will have multi-channel Exabit per second satellite communications capability.  It will be transmitted using gamma ray frequencies (~300 EHz, 1.24 MeV), well above visible light.