==The Mjolnir IV Program, headed by Doctor Catherine Halsey, was an attempt to create a army of super-soldiers, to be deployed in conjunction with the Spartan II's. The most well known subject of this program is Spartan-117, better well know as Master Cheif. There are many variations of Mjolnir, including CQB, EVA, Grenadier , Gungnir, EOD, Scout, Recon, HAZOP, Operator, Commando, JFO, Pilot and Air Assault.

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