Six selected for BTZ Published July 26, 2013 By 81st Training Wing Public Affairs KEESLER AIR FORC BASE, Miss. -- Six Keesler airmen first class were selected for senior airman below the zone July 25. They are: Carlos Cardona-Noriega, 81st Security Forces Squadron. Kimberly Carranza, 81st Medical Operations Squadron. Corey Evans, 81st Inpatient Operations Squadron. Carrie Leach, 81st Diagnostics and Therapeutics Squadron. Lani Martinez, 345th Airlift Squadron. Gary Posavad, 81st Surgical Operations Squadron.