Remote Access Service 
Remote Access Server 
Remote Access Services 
Registration Authorities 
Row Address Strobe 
Russian Academy of Sciences 
Router Advertisements 
Royal Astronomical Society 
running and screaming 
Rail Adapter System 
reactor analysis and safety 
reflection-absorption spectroscopy 
Registration, Admission and Status 
Remedial Actions 
Reusable Asset Specification 
Routing Areas 
Row Address Select 
Radio Astronomy Station 
Random Access Storage 
Reader Admission System 
Readiness Assessment System 
Rear Area Security 
recovery activation signal 
Rectified Air Speed 
Reference Assembly Sequence 
Reflectance Anisotropy Spectroscopy 
Refractive Aberrated Simulator 
Regional Administrators 
Reliability, Availability and Servicea… 
REMOTE ACCESS SYSTEM