America
[youtube=http://www.youtube.com/watch?w=640&h=480&v=C_7_dYWMsL0&hd=1]
England
[youtube=http://www.youtube.com/watch?w=640&h=480&v=GG_JegQ2GhQ&hd=1]
Germany
[youtube=http://www.youtube.com/watch?w=640&h=480&v=7NqwnraL1Pw&hd=1]
Source/Fuente: Call of Duty @ YouTube [http://www.youtube.com/user/CALLOFDUTY].