Internet: The 6 million DoD seats...
I know, on the surface, 6 million seats seems to be an incredibly big number to deploy within a short period of time...
... what one must not forget is that the purpose of the current large scale pilots (BIOS upgrade + remote TPM activation + ETS installation + WEM + ERAS binding) is to verify the configuration settings of each model of legacy PC that are currently installed.
Once these procedures and configuration settings are verified large scale deployment is a largely automated process with minimum human interaction that can scale to any number of PCs/seats.
So, if they want to deploy 6 million seats within 1 (one) year they can do that...