You would possibly be horrified at how little of our military's professional training and education institutions teach the Constitution. It is mentioned in passing in most regards. Pretty ironic considering that enlistment and commissioning oaths are to support and defend it against all enemies. foreign and domestic.
I wonder myself what is going on in our military training. My association with the Navy officers in my tour of service found most of them quite knowledgeable about our institutions. I am shocked that Clapper is such a moron.