Audio log (Halo 4)

There are quite a number of 'audio logs' in Halo 4, most of them are located at Ivanoff Station.

However, there do appear to be level specific logs as well.

Spartan John-117's service record
Location: under the very first walkway on the level Dawn.

Note: Although the Pilar of Autumn is a Cruiser, the service record misclassifies it as a frigate. Because the transcript classifies it as frigate, it will be named so here too.

Transcript:

System: This is the service record for Spartan John-117. Would you like to continue?

System: Frigate Pillar of Autumn discovers Forerunner Halo Installation 04 and deploys Spartan 117 to protect UNSC A.I. Cortana. Chief uncovers a Covenant plot to fire the weapon, and sacrifises the Autumn to destroy the Halo ring.

System: Pursuing the Covenant flaghsip after an attack on earth, Spartan 117 arrives at Installation 05 to find the Covenant erupting into civil war. After preventing the Covenant from firing the ring, 117 followed them back to Earth in search of a Forerunner installation that could activate all the galaxy's halos.

System: The Covenant arrive at Earth and open a portal to the Ark, an extragalactic Forerunner installation that can fire the Halo Array. Spartan 117 unites a joint Covenant/UNSC team to pursue the Covenant to the Ark, where he succesfully destroys the Installation and prevents the rings from being used.

System: When Spartan 117 attempts to escape from the Ark aboard the Forward unto Dawn, the slipspace portal that the ship is passing through collapses.

System: Aboard the aft section of the dawn, Spartan 117 is placed into cryo sleep pending recovery by UNSC forces. A.I. Cortana to remain active as long as is technically feasible.

System: End of service Record.

Systems check
Location: Near the very beginning of the level, in front of the Forward unto Dawn hologram.

Transcript:

System: Weapon systems online.

System: Gravity controls online.

System: Ship propulsion offline.

System: Bow hull integrity compromised.

System: Life support online.

Cortana's origin
Location: In a wreckage near the beginning of the level. It is near the wreckage the SAW is found.

Transcript:

Unknown voice: Catherine Halsey Research excerpt, 11 February 2550.

Halsey: A interesting factor here isn't that H-1 disabled the viral termination code I had implanted in her matrix. These metrics imply its success wasn't just unlikely, but that even the acceptance of the 7-year life cycle estimates may not apply.

Halsey: Thus far, I've determined that the unique circumstances of her creation have triggered what I can only refer to as a recessive variant in the A.I. seed.

Halsey: As her architect, I'm currently at a loss as to the origin of the development of this rogue element. Very curious.

Covenant's motivations
Location: In a wreckage near the beginning of the level. Note: All dialogue in this Audio log is spoken in Sangheili, and translated into English by Cortana.

Transcript: Cortana: Non-believers walk the sacred ground. Purge the heretics, so they not foul the air of Paradise. The time has come to enter the Great Light. The Promethean awakening is nigh, our reward is at hand.

Didact
Location: In a wreckage near the beginning of the level.

Transcript: Unknown Elite: Didact... (The same word is repeated every 30 seconds.)