What does AFOS stand for?

Advanced Field Operating System - National Weather Service

Agriculture Forestry and Other Human Activities Subgroup (SAUO)

Air Force Objective Series - Papers

Air Force Operational Service (SAA)

American Foundation of Oncologic Societies - Medicine (EDAA)

Anglo-French Offshore Surveys (SAUS)

Armed Forces Optometric Society (EA)

Automation of Field Observations and Services

Automation of Field Operations and Services - National Weather Service (MSC)