Operation: GREY VEIL

Concurrent:	Battle of Miridem
Next:	Operation: WARM BLANKET
Operation: GREY VEIL
Conflict:	Human-Covenant War
Date:	2544
Location:	Heian
Outcome:	UNSC victory Target San'Shyuum assassinated
Details Belligerents United Nations Space Command Covenant Commanders Unidentified ONI officer MSgt Cortez Unidentified Prophet† Unidentified Jiralhanae Chieftain† Strength Four Orbital Drop Shock Troopers One Spartan-II Jiralhanae Multiple Sangheili Honor Guards Multiple Unggoy Casualties Checkman Cal-141 Unidentified San'Shyuum Unidentified Jiralhanae Chieftain Several Unggoy

Operation: GREY VEIL was an Office of Naval Intelligence assassination mission on the planet Heian in 2544.. The operation saw death of a Covenant Minor Prophet, as well as the discovery of a series of prehistoric ruins that were of particular scientific interest.

Prelude

Heian was the site of an important Covenant logistics base from which supplies were delivered to the rest of the planets in the system, as well as the entire sector. The United Nations Space Command's Office of Naval Intelligence had discovered that a Covenant Prophet was on the planet, and that his death would compromise Covenant logistics operations in the sector, giving the UNSC a strategic advantage. In addition, the planet possessed a series of ruins that predated both the Covenant and the UNSC. In addition to killing the Prophet, the assault team had the secondary objective of documenting these ruins.

A team of four Orbital Drop Shock Troopers led by Master Sergeant Cortez was ordered to carry out the mission. However, the assassination was to be carried out by Spartan Cal-141. This caused some resentment among the ODSTs that remained throughout the mission.

The raid

The team was deployed via M8900 SOEIV from the destroyer UNSC Kronstadt. Entering the planet's atmosphere under cover of a meteor shower, one ODST, Checkman, was killed after his pod entered the planet's atmosphere at a bad angle. The surviving pods landed in close proximity to each other, but one ODST, O'Brien, landed in a swamp. Cal saved O'Brien from drowning as the latter's pod began to sink. However, as Cal had replaced him as sniper for the mission, O'Brien's contempt for the Spartan increased.

The team moved north through the ruins to gain a vantage point, taking photographs as they moved. Contact was made with a patrol of Unggoy led by an unidentified Jiralhanae Chieftain. Though the Unggoy were successfully neutralized, O'Brien was nearly killed and had to be saved by Cal. The Brute was thrown over a waterfall and presumed dead, but in fact survived and followed the team to their sniping position.

The team arrived at the sniping point with only two minutes before the Prophet arrived to inspect the ruins. However, they were ambushed by the chieftain and Cal was mortally wounded before she could fire on the Prophet. Despite his initial hesitation, O'Brien killed the Prophet with a single shot to the head from over two miles away.

Aftermath

Cal died shortly after the Prophet's death, giving Cortez the recordings of the ruins on a data crystal chip. These sparked interest within the scientific community after the Human-Covenant War, and the Department of Xenoarchaeological Studies at the University of Edinburgh was commissioned by ONI to research the ruins. Shortly after the battle's conclusion, Doctor Catherine Halsey was able to review footage of the Heian ruins recovered by the surviving ODSTs - and immediately reasoned them to predate any Earth civilisation. However, with the Covenant's presence on the planet still strong and the Battle of Miridem raging on, she figured that the UNSC would be unable to spare any resources to follow-up investigations in the near future. Despite this, Project BOOKWORM would later establish a research presence on Heian in the post-war years.

Cal's actions during the mission and her saving O'Brien's life many times until the loss of her own changed the team's thoughts and opinions on the Spartans. Upon their return to Kronstadt, the surviving ODSTs reacted aggressively to an Army specialist who suggested the Spartans were inferior to them based on Cal's death.

Many years later, GREY VEIL's success had become well-known throughout the UNSC; during the Second Ark Conflict in mid-late 2559, after-action reports of O'Brien's sniper shot were studied by Lance Corporal Devon Sparks of Sunray 1-1 and their tactics put to use some time following Operation: SPEARBREAKER to assassinate a Jiralhanae Captain of the Banished. This sniper shot has ultimately become legendary throughout the marksmen contingent aboard UNSC Spirit of Fire.

Gallery

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  The Kronstadt deploying its SOIEV complement.

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  Cal-141 pulls O'Brien's SOEIV out of the swamp.

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  Cal and the ODSTs after O'Brien is saved.

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  Cal catches the Jiralhanae Chieftain's gravity hammer before it hits O'Brien.

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  Cal assists O'Brien.

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  The ODSTs plan their next move as Cal-141 stands watch.

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  Cal sets up her SRS99C-S2 AM sniper rifle.

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  Cal-141 scans over the Covenant forces through the scope of her sniper rifle.

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  Cal zooms in on one of the Sangheili guards.

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  Cal tracks the Minor Prophet's Ru'swum-pattern Phantom.

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  O'Brien spies the Minor Prophet through the scope of the sniper rifle.

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  O'Brien's perspective immediately before taking the shot.

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  The ODSTs try in vain to tend to Cal's injuries.

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  Cal gives Cortez the data crystal chip.

List of appearances

• Halo Legends
  • The Babysitter (First appearance)