Thom Shephard

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"Sam! Sam! Come on, we gotta' get the hell outta' here!"

- A panicked Thom urgently hurries the Chief out of Cryo Two

Chief Petty Officer Thom Shephard was an Engineering Technician for the UNSC aboard the UNSC cruiser in 2552. He, along with Tech Officer Sam Marcus, unsealed the Master Chief from the Cryo-chamber before the Battle of Installation 04. He ran the Chief through several diagnostics and tests his MJOLNIR Mark V armor. Soon after, Captain Keyes called the Chief to the bridge of the ship. A single Elite entered the control center of Cryo-B, killing Sam. Thom then told the Chief to follow him to the bridge and rushed out the door, where he was killed by a conduit explosion in the wall.

Trivia

 * If you restart the level or keep coming back to Reveille, Thom will have a different face than before.
 * If you control him using Halo: Custom Edition, he will die, no matter what you do.