The document discusses how to sustain agility in an organization after coaches leave. It recommends using Force Field Analysis to examine the driving and restraining forces affecting organizational change. It then provides three key mechanisms for maintaining agility: 1) establishing an impediments handling process to address barriers raised by teams, 2) creating an internal coaching or support process to help people through fears of change, and 3) adopting an agile portfolio management process for project planning instead of big upfront planning.