Thunder Two-One is the callsign of an MH-6 Little Bird helicopter in Call of Duty: Modern Warfare 2. It was operated by Shadow Company. Thunder Two-One appears in the level "Loose Ends", and is called by Ghost to eliminate pursuing Ultranationalists in the treeline. Ironically, it protected Ghost and Roach from the Ultranationalists just long enough for them to be betrayed and killed by Shepherd.