Seventeen technical sergeants graduated Dec. 17 from the NCO Academy at Keesler Air Force Base, Miss. They are:Tech. Sgt. Casey Boyer, 19th Logistic Readiness SquadronTech. Sgt. Brandon Bowers, 53rd Airlift SquadronTech. Sgt. Douglas Cunningham, 19th Maintenance GroupTech. Sgt. Stevie Eskridge, 19th