GST Methuselah

The  was the first Global Stratospheric Transport to take flight, in 2071. It became part of a fleet of similiar craft, aiding in the defeat of the Nod Separatists movement. Ever since their defeat in 2073, the MEthuselah, as part of the First Fleet, orbits Earth, ready to respond to any sign of trouble instantenously.

In-game
In the third GDI campaign mission a downed GST must be guarded, repaired, and relaunched. The mission and unit is a homage to Kodiak, the player's command ship in Command & Conquer: Tiberian Sun, which also featured a similar mission.