During the Battle of Sigma Octanus IV, the Spartan-IIs employed these, and John-117's Recorder chip contained the record of his mission to Côte d'Azur, as well as intelligence on Covenant Huragok and Mgalekgolo. This was much appreciated by HIGHCOM. Private Jenkins' helmet was equipped with one, and John-117 used a playback system in his helmet to view the squad's progress as he tried to find Captain Keyes. It was using this chip's recording that he first saw the Flood. The recording was later saved in John-117's suit.