4 selected for promotion this month Published Dec. 15, 2010 By 81st Training Wing Public Affairs KEESLER AIR FORCE BASE, Miss. -- Four Keesler enlisted members have been selected for promotion in December. To staff sergeant--Senior Airmen Marcus Easterling, 81st Dental Squadron, and Noah Erdman, formerly of the 338th Training Squadron. To technical sergeant -- Staff Sgt. Scott Ross, 334th TRS. To master sergeant -- Tech. Sgt. John Lane, 333rd TRS.