Carter-A259

"This is Sierra-259, you got Spartans on the ground sir. We're not going anywhere."

- SPARTAN-259

SPARTAN-259 was a SPARTAN-II Commando and a member of the UNSC Naval Special Warfare Command.

Due to Sierra-259 not being one of the SPARTAN-IIs who escaped Reach with SPARTAN-117, it can be assumed that Sierra-259 perished during the battle, or found some other means off of the world.

Trivia

 * Sierra-259's status as a Spartan is merely conjecture, as no official source has claimed that he is indeed a Spartan, however it is likely given his statement that "[You] got Spartans on the ground, sir. [We're] not going anywhere."