User blog comment:Argorrath/Treyarch releases a BO2 teaser video called "Origins" for DLC 4/@comment-1263839-20130807171325/@comment-11106160-20130807172757

At first I thought it was a "Rough, tough, and battle-hardened'' version of the original crew, but now I think it's when they're all young (plus, that one guy wearing an aviator helmet that doesn't look like anyone).