The technician Keven Tarr assembled a massive collection of thousands of navidroids – a project known as Keven Tarr's navidroid array. This array was built on the Rooted Moon of Hetzal Prime following the Great Hyperspace Disaster. Tarr, with the aid of the Galactic Republic, envisioned the array as a method for forecasting the Emergences of wreckage originating from the destroyed freighter Legacy Run, which had thrown hyperspace travel into chaos throughout the Outer Rim Territories. Despite initial problems with overheating when first activated, the array ultimately achieved its goal of predicting future Emergences.