UH-1 Iroquois

 The Bell UH-1 Iroquois "Huey" is a helicopter that was used primarily by the United States Military during the Vietnam War. The "UH" in it's name stands for "Utility Helicopter" meaning that it can fill multiple roles ranging from ground attack to transport.

Call of Duty:Black Ops
The UH-1 made its first appearance in the teaser trailer for Call of Duty:Black Ops, it has been confirmed to be present in multiple levels, including "Slaughterhouse", where it provides gunship support for SOG operatives, and "Victor Charlie" where one operated by the 1st Cavalry Division is shot down and attacked by Viet Cong. It will most likely be the main helicopter featured in Black Ops.