It got a little easier for Air Force majors to reach the rank of lieutenant colonel, or O-5, on time this year. Of 1,598 majors who were eligible for “in-the-zone” promotions, 1,231 airmen, or 77%, ...

Maj. Tiffany Sellers, commander of the 14th Logistics Readiness Squadron, is promoted to the rank of lieutenant colonel at Columbus Air Force Base, Miss., on December 20, 2022. (Melissa Doublin/Air ...