Delta One X-Ray

Delta One X-Ray (D1X) was the callsign for the commander of the SAS-Marine joint team operation in the campaign missions "Ultimatum" and in "All In", as seen in the events of Call of Duty 4: Modern Warfare.
==Call of Duty 4: Modern Warfare==
When the nuclear missiles in "Ultimatum" were launched, Delta One X-Ray tracked the missiles all the way from the missile launch facility. They provided the assault teams real-time information about the missiles, specifically the countdown to impact, and the progress of the negotiations for the codes with the Russians. Delta One X-Ray also gives the feed by the time the missiles self-destruct.
Category:Call of Duty 4: Modern Warfare Callsigns