Three generations of Chiefs
(L – R) Chief Master Sergeants Harold E. Shreiner, Larry F. Shreiner, and Glenn F. Shreiner, pose for a photo of three generations of chief master sergeants with a combined service of 72 years. Chief Master Sgt. Glenn Shreiner, chief air traffic controller at Altus Air Force Base, Okla., was pinned in August. His father and grandfather wear the older version of chief master sergeant chevrons used during the periods they served.