Former Vice President Dick Cheney agreed to be interviewed by Dr. Sanjay Gupta on CBS’s “60 Minutes” The interview was meant to help sell his new book, “Heart,” but some of the details from the interview are worth repeating. When Cheney’s heart was replaced in 2007, his cardiologist was worried someone would hack it and kill him. When asked what Cheney thought after watching a similar hack-a-heart scenario on the ShowTime series “Homeland,” he said, “I found it credible””]