Operation: WHITE GLOVE

WHITE GLOVE was the code name for the plan for the destruction of ONI's CASTLE Base. In the event the facility was ever in danger of being taken over, a single person was to remain behind and activate the Operation, detonating the explosives planted under the facility in order to destroy the base and prevent its secrets from being captured.

In 2552, during The Battle of Reach, Dr. Catherine Halsey was left behind along with several AIs, including Kalmiya and Araquiel. When the Spartans arrived at the facility, Halsey activated the operation and destroyed the facility. She, Fredric-104, William-043, Vinh-030, Isaac-039, and Kelly-087 were able to hide in the Forerunner Caves beneath the base. They were able to stop the Covenant from accessing the secrets of the base, but they were trapped under the base for several days.