From Halopedia, the Halo wiki
In 2531, he was present for the Battle of Arcadia and the Battle of the Etran Harborage. Following these events, he and the rest of the crew aboard the ship entered cryostasis, having sacrificed the ship's slipspace drive to destroy the Etran Harborage. In 2559, he and the others were awakened to find themselves above the Banished-controlled Installation 00. During the battle to retake the Ark, Johnson undertook charge of the Spirit's weapons systems when the Enduring Conviction launched an attack on the Spirit of Fire.
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