The full extent of the VIGILANT's surveillance and stealth capabilities remain highly classified. Observers have speculated the suit includes a new reconnaissance and fire control system for directing orbital artillery strikes.
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— Helmet description
Mjolnir Powered Assault Armor/Vigilant is a variant of Mjolnir Powered Assault Armor designed to resemble the Mjolnir/Scout armor used by Jun-A266 in Halo: Reach. It was first introduced in the Memories of Reach update for Halo 5: Guardians.[2]