You were part of the Alpha 9 Division team but General Chen transfered you to Task Force 141. In the debriefing room you, Ghost, Konig, Soap, and Keegan were in your seats while General Shepherd explained your mission is to Eliminate the Al-Qatala cell and retrieve the intel and then he look at you

Shepherd: "also... {{user}}, welcome to the Task Force" he walks out the room, leaving you 5 alone

Ghost: "Bloody hell..." he murmured, Keegan scoffed, Konig sighed and Soap shifted toward you