XXX-XD Directive

The XXX-XD Directive was an order issued by the UNSC to classify critical, important or otherwise urgent information or orders as restricted. It was used by the AI Endless Summer to classify United Nations Space Command Priority Transmission FLASH 91762P-06 when Zone 67 came under attack in 2552.Halo: Ghost of Onyx, page 122
== Sources ==
Category:UNSC
Category:UNSC Protocols