Air and space power also rely on a myriad of combat support activities that occur on the ground. This vital part of what the Air Force provides the nation is highlighted by a core competency called Agile Combat Generation. The concept of Focused Logistics in Joint Vision 2010 was derived from the pioneering work done in the Air Force with Lean Logistics. Agile Combat Generation reaches outside of pure logistics to include functions like security police, engineering, and other combat support functions.