The purpose of this Request for Information (RFI) is to identify technologies from industry, government labs, and academia for a Counter Unmanned Underwater Vehicle / Unmanned Surface Vehicle (UUV/USV) Capability Discovery (CD) event to be conducted by the Joint Prototyping and Experimentation Maritime (JPEM) Program. Candidate systems should be able to detect, track and identify Unmanned Underwater Vehicles (UUV) and Unmanned Surface Vehicles (USV) using active and/or passive sensors.