>> thank you. joining me now is someone who has been listening to this. i was able to see him nodding and laughing at a certain classified operation that he won't talk about when it comes to cyber. it's the former defense secretary, former head of the cia, former white house chief of staff, to name a few titles, leon pennetta. welcome back. >> good to be with you, chuck. >> i want to start with something john mccain said in 2012. the reason i'm bringing it up is because you were fully engaged in all of these issues back then. he said this. it was right after the 2013 defense authorization act. he said, i believe that cyber warfare will be the key battlefield of the 21st century. i am concerned about our ability to fight and win. i'm concerned our strategy is