Complex sentence: As a result, in 1959, Ellington was downgraded to a reserve Air Force Base, and has served the military in that capacity since; the Civil Air Patrol also moved its national headquarters from Bolling Air Force Base, DC to Ellington the same year.
Split into simpler sentences: As a result, in 1959, Ellington was downgraded to a reserve Air Force Base and has served the military in that capacity since. In 1959, the Civil Air Patrol also moved its national headquarters from Bolling Air Force Base, DC to Ellington AFB the same year.