Simplify the following text for a Grade 8 native English-speaking person.
Original: The bunker was manned by members of the No. 2 Volunteer Air Observer Corps , the Women 's Auxiliary Australian Air Force , members of the Royal Australian Air Force and the United States Army Air Forces .
Simplified: Some of the people who worked in the bunker were from the No. 2 Volunteer Air Observer Corps ( VOAC ) , The Women 's Auxiliary Australian Air Force and a few members of the Royal Australian Air Force and the United States Army Air Forces .