When General Dempsey pondered what comes after jointness, he was trying to see over the horizon towards our next era of struggle. That era has come. From the levée en masse to mechanized warfare and the advent of the networked world, social and technological revolutions have underpinned the great conflicts of the past. Another such inflection point looms. Gray-zone warfare, the blurring line between war and peace, and the boundary-erasing zeitgeist of social media all point to a rapidly changing security environment. The joint force must not wait to be dragged into the future, but rather act as the vanguard of change. Recognizing the paradox that increased deterrence can result in decreased security will be key.