4PDH- This session will be a good follow-up to anyone who attends the Overview session on NSRS Modernization Thursday afternoon. We will discuss details on geoid models and computations, OPUS Static, OPUS Rapid Static, OPUS Projects, working in datum epochs, and some other general geodesy. Live demonstrations of the NGS Coordinate Conversion and Transformation Tool (NCAT), the NOAA VDatum application, and other online tools will be performed. A full walk-through of OPUS Projects will be demonstrated, to better inform surveyors of its capabilities. As always questions and discussions will be welcome, while any specific questions you would like addressed during the session can be sent to jeff.jalbrzikowski@noaa.gov ahead of time.