Google is now offering a Google Earth Portable Server as part of their enterprise offerings. This architecture lets users select their area of interest from a web page with the Google Earth Plugin embedded in it. This are is extracted and downloaded on to their computer, and is served to the Google Earth Enterprise client, or to a web page with the Google Earth Plugin.
This configuration offers a lot of flexibility for use, and can run completely disconnected from the network. This is a big deal for government and DoD customers.
Similar solutions in the past made use of Linux virtual machines running a Google Earth Server connected to a Windows machine. The new configuration is much more elegant and manageable.
This architecture will make a lot of sense for military use. Soldiers could select there are of interest from an NGA server, and then download their imager, vector data, and applications as a deployable bundle that can operate disconnected, or in conjunction with other services.