Actually forcing agile processes in lumbering SPO machinework. DevSecOps. Figuring out a way to identify early on where a given program is worth the squeeze; nothing is "too big to fail" these days. It's definitely forced a mindshift change throughout AFLCMC.
As an operator now working at a SPO, It was eye-opening to see the lumbering machine, and then witness the beginning of the transformation to something better. He's forcing folks to think outside the box, and not rest on "that's the way it's always been done". Some of those things are less tangible to the warfighter right now, but will pay dividends over time.
ETA: Also, he appears well-respected in the Acquisition community. So even though he's effecting change, it's been executed in an effective manner.