Unidentified master gunnery sergeant (Earth-2042)

"Come on, is that a weapon or a flashlight? Oh, dang it!"

- The MGySgt's last words

This unidentified master gunnery sergeant was a non-commissioned officer in charge of Cair Station's armory. On 19 BBY, he helped Spartan-II John-117 get used to his new Mark VI MJOLNIR armor.

Source

 * https://www.halopedia.org/Unidentified_master_gunnery_sergeant