Meat

Meat is a character in Call of Duty: Modern Warfare 2 and is a member of Task Force 141. He is seen in the Rio De Janiero video chasing someone down the streets with Cpt. "Soap" MacTavish, Sgt Gary "Roach" Sanderson, Ghost and Royce. Then Meat goes with Roach and Royce to the civilians in the favelas. Royce then says "Meat, get those civvies out of there" at which point he replies "Roger that" and starts yelling in Portugese language. He might be the person who is wearing a helmet, light blue jeans and a combat vest. In the trailer if he is that person, he is jumping with Soap to a helicopter and also running on the rooftops of the favelas. That might be a part of the Rio De Janiero level because Royce yells to Roach to continue onto the rooftops.