 The national security environment, it's unstable. You can't predict when a conflict is going to happen. You don't know where it's going to happen. You don't know who your adversaries are always going to be. And so you have to be able to rapidly evolve. So one of the things we're actually specified to do in the National Defense Strategy is to have rapidly evolving forces. I believe education is the key to that. It gives you the cognitive agility to be able to diagnose your environment and then quickly respond to changes in that environment that you just can't predict. So one of the challenges that we face as chief master sergeants and really at all levels is you focus on what your day-to-day job is. And so one of the most important things that we do for our leaders is give them that strategic perspective, national defense strategy objectives, chief of staff for the Air Force priorities, secretary of the Air Force priorities, and then how do they fit into that overall scheme in terms of organizing to meet those objectives. And that's Air University.