Adam Baldwin
From Halopedia, the Halo wiki
Adam Baldwin is an American actor who is well-known in both film and television. He is particularly famous for his role as Animal Mother in Full Metal Jacket, and is famous for his TV roles as Jayne Cobb on the science fiction/western television series, Firefly and John Casey in the TV series Chuck. Baldwin voiced a UNSC Marine in Halo 3 [1]. He also voices Corporal Taylor H. "Dutch" Miles in Halo 3: ODST.[2]