Delta 2-4 was the Baseplate (British Headquarters) for Captain MacMillan and John Price.

Call of Duty 4: Modern WarfareEdit

In the mission One Shot, One Kill, he is heard after being contacted by MacMillan while MacMillan and Price try to escape the swarms of Ultranationalists in the aftermath of the attempted assassination of Imran Zakhaev. During the levels, both of Price and Macmillan keep radio silence with Delta 2-4, possibly because they might fear to be detected by the radio signal.

They may or may not have been Special Forces, due to their Delta callsign, and weapons.