Nebraska stroke window period expert witnesses assess whether acute stroke recognition and time-to-treatment met accepted standards. They are often vascular neurologists, emergency physicians, and stroke program leaders from Omaha and Lincoln systems like Nebraska Medicine. They understand rural EMS transport realities and telestroke workflows across critical access hospitals. They evaluate onset documentation, imaging interpretation, tPA and thrombectomy eligibility, and delays in door-to-needle or door-to-groin times.