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U.S. Air Force Senior Master Sgt. Alexander Alexander, 30th Security Forces Squadron (30 SFS) first sergeant, center, speaks to 30 SFS Airmen during a guard mount at Vandenberg Space Force Base, Calif., May 28, 2026. As first sergeant, Alexander serves enlisted members, officers, civilians and commanders. Alexander provides support through personal challenges, professional development, and many other facets of life. First sergeants, also known under the alias of “first shirts" or just “shirts,” fulfill a critical senior enlisted leadership position in their unit, and are often described as “Swiss Army knives” due to their versatility. (U.S. Space Force photo by Staff Sgt. Kevin Hernandez)