I attended a conference today and was surprised to learn that the US Air Force Institute of Technology now accepts US citizens as students. I checked out their web site and find they offer an on-line Certificates in Systems Engineering and in Information Assurance. http://www.afit.edu/en/ENV/
Wow - terrific find! AFIT is ABET-accredited, and the Systems Engineering curriculum has some real heft.
That is correct. I notice some on-campus courses require the student to have a secret security clearance.