The plan was to have each of the services provide people. NSA would provide the equipment, training, etc. There are those on this net that are much more familiar with how this has played out than I because they worked there. Heaven knows what these fellows and gals will be called. I see a lot of similarity here.
Commands do their own monitoring now.
I have submitted a UFR for equipment to do the monitoring, and it basically consists of telephone and cellular phone monitoring systems which plug into the computer, and radio receiving equipment which consists of a circuit card which you plug into a slot in the computers, and which displays monitored frequencies on the screen. Monitoring computers is just a software thing. This stuff is a far cry from sitting with a GTA or GISH though.