The Gen. served in some of the most sensitive posts of the Army, including as DG MO.
The penalty is death for all serious espionage/treason --- it does not have to be nuclear secrets. The Brig and Dr. were working for our intel agency and leaked sensitive information that seriously compromised national security.
There are many, many others. Hopefully this will at least scare some into saying "no" to the CIA when it comes knocking.
The scary thing is the greed involved; not only are you set for life when you retire as a 3-star --- so are your kids. You get a huge amount of property and other perks and benefits and usually can find employment even post retirement. To still go out and sell your country shows how we have become the ultimate slaves of blind capitalism.