California

Agent California was a Freelancer-in-training that was aboard the Mendacious Remembrance when it crash-landed in Blood Gulch. She was found dead (murdered by the Gas Guzzler) around a month after the crash, by Campbell, Das, Scott and Sam.

Death Journal
"This is Freelancer-in-training Captain Cali, on board the UNSC- ah, fuck it... I've been on this ship for what seems like forever. Most of the people I was on board with are all dead, I think one survived and crashed it somewhere on a Halo ring, which is where I am now. I haven't seen outside of the ship, since I'm fucked up pretty badly but have been treating myself with what little medical knowledge I have, as well as looting whatever food I can find around the ship.

"I think I'm ready to leave and explore what's outside the ship, right now I'm getting ready to leave and I will be starting a new audio recording once I make my way out."

distant noises of doors opening can be heard

"Oh!  whisper, scared  it sounds like someone is on the ship. I don't know who, but I'm prepared to take this mother fucker ou-"

loud banging noises are heard as a door is busted open and multiple gunshots are heard. Another bang of a pistol hitting the wall and falling to the ground. Screaming, yelling, and sounds of struggle are heard, before it goes silent. Loud footsteps are heard leaving the room and they fade away.