 Technical challenges to the proposed ACV continued to mount as funds kept getting constrained, so the decision was made that wheeled APC advancements where significant enough to address needs quicker.Marines still want a high-speed fully amphibious vehicle to move troops from the ocean to a beach with enough armor, mobility, and firepower to fight while on land, which was proposed as ACV Phase 2.The Marine Corps plan to modernize its amphibious invasion force has three parts