This paper tracks the development of a Chemical, Biological, Radiological, Nuclear and Explosive (CBRNE) sensor array prototype, designed and built as both a standalone unit and for deployment on Unmanned Aerial Vehicles (UAV) and Remotely Operated Vehicles (ROV), primarily for Defence related missions. The CBRNE sensor array prototype employs multiple gas sensors, a radiation sensor, and other components that will allow it to be used as a flexible tool in hazardous environments. This tool will feature additional components including GPS for geo-tagging sensor readings, particularly on UAV and ROV missions and an LCD screen so that the prototype can function as a hand-held tool. The proposed sensor array will deliver mission critical data transmitted from the CBRNE sensor array prototype in different available formats, including KLV video metadata and a standalone graphical visualization display.