Roadster, neither proposing or recommending, but offering an informed opinion. Hopefully it has changed now but we had one officer to Strike who would send out confidential documents but omit the grading.
Nutty, you surely jest. The MoD is one of the slowest adopters of new technology. They wait for at least 12 months before considering a change. I don't know the OS being used but suspect OS 7.
With the network the PC storage will be at the data centre so reasonably secure a nd USB disabled.