During the Fall of Reach, the Sabre Program Facility fell under attack by the Covenant after the Battle of Viery ended. It was revealed that the Covenant strike force was headed by a Covenant CSO-class supercarrier.
The reasons for the Covenant's attack on the facility were most likely because the Covenant wanted to capture or destroy the experimental Sabres. When Noble Team arrived at the site to procure the ships the Covenant assault was already underway with Covenant Drop Pods landing and Spirits flying in to deliver Elites, Grunts, and Jackals. Noble Team fought their way up the beach to the facility. Despite anyone's best efforts though, Covenant Elites were still able to infiltrate the base and slaughter many of the personnel. Noble Team took care of them before Noble 6 and Jorge boarded a Sabre and launched into space, initiating Operation: UPPERCUT.
- A B.O.B elite will drop in one of the drop pods.