Complex sentence: The mission of the command at Dobbins was changed to the supervision, management and support of Air Force Reserve airlift forces for Military Air Command and participated in such missions as Operation Just Cause.
Split into simpler sentences: The mission of the command at Dobbins was the command was changed to the supervision and support of Air Force Reserve Forces. Assigned to the Air Force Reserve it managed airlift forces for Military Air Command and participated in such missions as Operation Just Cause.