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The two prototypes differed significantly. Both teams were selected in December 2018 to build and deliver 12 MPF prototypes. Later that year, in the fall, the competing light tank prototypes moved into the Army’s limited-user test, which marked the final step before the service would be able to decide on a winner. In 2021, the systems went through a soldier vehicle assessment with the 82nd Airborne Division at Fort Bragg, North Carolina, during which soldiers were tasked with validating the MPF concept and providing feedback on how the service should develop tactics, techniques and procedures for fighting with this capability. Bush noted the MPF program has undergone several oversight council reviews, and that this time the Army assessed quantities and types of units to which the service would field MPF.
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