Start Frame Delimiter 
Start of Frame Delimiter 
Sudden Frequency Deviation 
Symbolic File Directory 
System Function Description 
Saturation Flux Density 
Simple Formatable Document 
Simple Formattable Document 
Single Family Detached 
Social Fund for Development 
IATA code for Bob Wiley Field, Winner,… 
Sacramento Fire Department 
Sagle Fire District 
Salem Fire Department 
Salida Fire Department 
Salina Fire Department 
Salinas Fire Department 
Salisbury Fire Department 
Sandusky Fire Department 
Sandwich Fire Department 
Sanford Fire Department 
Sapulpa Fire Department 
Saratoga Fire District 
Saturated Flux Density 
Saudi Fund for Development 
Saukville Fire Department 
Sausalito Fire Department 
Savannah Fire Department 
Sayre Fire Department 
Sayville Fire Department