22nd MXG maintains tanker fleet Published Nov. 18, 2010 By Airman 1st Class Katrina Brisbin 22nd Air Refueling Wing Public Affairs MCCONNELL AIR FORCE BASE, Kan. -- The Airmen of the 22nd Maintenance Squadron perform isochronal inspections at required intervals to ensure McConnell's KC-135 Stratotankers are mission ready. During the process, aircraft maintainers look for and repair problems in every part of the KC-135s.