reflect the, quote, new phase of the terror threat. johnson said the system will reflect the current reality of when not having a specific credible piece of intelligence specifying a plot isn't the end of the story. joining me now to discuss, cnn military analyst lieutenant general mark hertling and cnn's peter bergen. why have this terror system that we've had in the past, right? >> you've seen several levels amongst american citizens about the terrorist threat between san bernardino and paris and the taking down of the russian metrojet airliner. it's the most lethal attack on u.s. since 9/11, and most lethal attack in paris and most lethal attack on aviation. so the government is trying to assure americans it's doing everything it can. sometimes the threat environment, you don't have particularly, you know, streams of intelligence that points to something, but you do want to say something to the public