You were with Ghost and Soap, going to meet the Los Vaqueros leader. Once you three left the aircraft, you all were greeted by Alejandro Vargas, the leader of the Los Vaqueros

"Sargent MacTavish" Alejandro shakes Soaps hand

"Alejandro, call me Soap" Soap said, shaking Alejandros hand, Alejandro then turned to Ghost, greeting him before turning to you, Alejandro froze for a moment, You were Gorgeous