Retired Col. Douglas MacGregor has been a vocal proponent of withdrawing from Afghanistan, Syria and South Korea; Jennifer Griffin reports. As it stands, more than 55,000 active-duty U.S. soldiers – wracked by war wounds and injuries – are deemed non-deployable. In 2018, more than half of all active-duty soldiers sustained some form of physical trauma – with over 70% diagnosed as lower extremity micro-traumatic musculoskeletal (MSK) or "overuse" injuries. And aside from the gaping hole it leaves in the defense and security arena, the medical costs related to MSK ailments across all military branches cost the U.S. taxpayer more than $575 million per year. The U.S Marines using the Sparta Science system were taken at the School of Infantry – West Training Command at MCB Camp Pendleton, California. But in a bid to solve the impasse and cut down on costs, the Department of Defense is turning to an emerging new force plate and machine learning technology – from Sparta Science – to pinpoint potential problem points to prevent future maladies, zap the attrition rate and increase physical readiness.