This is an Air Force 707 320C. If you notice, it has CFM Engines!!!
This is a command and control aircraft that communicates with the nuclear subs of the US arsenal.
The pilot told me it was built in 1991 and does use the new engines. I am still hoping Sami will let us re-engine these things one day.
The 2nd picture is a close up. This is clearly not a JT3D.