Nine days after unveiling his vision of a “defense innovation initiative” in a speech at the Reagan Library, Chuck Hagel is on his way out. He has come late to an appreciation of the pressing need to pursue game-changing paths in military and security affairs, and will now have little time and no power to champion the redesign of our armed services. Thus, the need to move from a muscle-bound military that has engaged to little positive effect in Iraq and Afghanistan—at a cost of trillions—to a leaner, nimbler, more networked force will remain unmet. This, above all else, is the greatest shortcoming of Hagel’s time as secretary, a fault he shares with his post-9/11 predecessors in the defense post. Donald Rumsfeld, Robert Gates and Leon Panetta also failed to take advantage of the bully pulpit of the Pentagon to effect needed transformational changes.John Arquilla