A thermal blanket was used by the SPARTAN-III's and Kurt-051 to cover Dante-G188's body inside the Sentinel manufacturing facility on Onyx to hide him from the Sentinels of Onyx. It was also used on Dr. Halsey when she arrived on Onyx, and later to create a primitive Faraday cage around Halsey when she was working on her laptop, to avoid detection by the Sentinels' electromagnetic sensors. Thermal blankets were also used to hide armed Lotus anti-tank mines from the Covenant.