MJOLNIR Mark IV Powered Assault Armour/Vajra II

Though externally identical to the standard Mark IV MJOLNIR suit worn by SPARTAN-II personnel, in terms of design and internal structuring the Vajra II was a radical improvement. After the collapse of Project VAJRA, many of its designers were reassigned to Project ARONDIGHT, where their expertise were put to work developing equipment that would benefit the regular infantry. Others were reassigned to Project MJOLNIR under Doctor Catherine Elizabeth Halsey, designing improvements and upgrades for the Mark IV. It was this team that created the Vajra II variant - while the original was a decided flop, its successor was anything but - assigned to Spartan-II Indigo Team for field testing, many of the improvements made for the Vajra II would later be incorporated into and improved upon for the MJOLNIR Mark V.