Federation of American Scientists 
Free Alongside Ship 
Foreign Agricultural Service 
Fetal Alcohol Syndrome 
Facility Associated Signaling 
Frequency Assignment Subcommittee 
Flow Accounting Server 
Flow Admission Service 
Financial Accounting Standard 
Freely Associated States 
Facility Associated Signalling 
Federal Acquisition Service 
Financial Accounting System 
Flame Absorption Spectroscopy 
Frame Alignment Signal 
Fuels Automated System 
Fallout Assessment System 
Fieldbus Access Sublayer 
Final Approach Speed 
final assembly schedule 
Financial Accounting Standards 
fire alarm system 
foetal alcohol syndrome 
for a second 
Force Accounting System 
Forces Accounting System 
Foreign Agriculture Service 
Forward Aid Station 
Frame Acquisition and Synchronization 
fueling at sea