Amongst other things, he says:
Whistleblower protection laws do not cover national security contractors such as himself. That's interesting; guess none of the people (ie congress people,etc) saying he should have stayed here and then he would be considered a whistleblower are ignorant of the laws.
What concerns him about the threats against his life is "that current, serving officials of our government are so comfortable in their authorities that they’re willing to tell reporters on the record that they think the due process protections of the 5th Amendment of our Constitution are outdated concepts. These are the same officials telling us to trust that they’ll honor the 4th and 1st Amendments. This should bother all of us."
Complete transcript at the above link.