What does RISS stand for?

Range Instrumentation and Support Systems

Realtime Infrared Scene Simulator (SAUS)

Recommended Initial System Stockage

Refractive Index Sounding System

Regional Information Sharing System - Department of Justice

Relational Inquiry and Storage System (SAUS)

Remote Infrared Surveillance System (TIMI)

Rockwell International Suspension Systems Co.

Rural Injury Surveillance Study (SAUS)

Rutherford Ion Scattering Spectroscopy (SAUS)