2539

2539 was a year in the 2530s in the 26th century.

Unknown

 * Team X-ray of Beta Company vanishes during a training exercise on Onyx. The area is dubbed "Zone 67", and is subsequently closed off by ONI.
 * Kholo is attacked and glassed by the Covenant.
 * Details of the Barugi Incident are made part of the public record.