Tune up Published Aug. 9, 2006 439th Airlift Wing Public Affairs WESTOVER AIR RESERVE BASE, Mass. -- Westover maintainers are trained on the inner workings of the massive engines aboard the C-5 Galaxy. Westover operates and maintains 15 C-5A models and one C-5B. The wing expects to be equipped with all B models within two years. The Patriot Wing has been flying the Air Force's largest aircraft since 1987.