A massive tornado swept through the Oklahoma City area Monday afternoon, leaving ruin in its path. Moore Medical Center, which stood directly in the tornado's path, was . But the workers, patients and their families in the hospital escaped. Nick Stremble, a registered nurse and manager at the hospital, told Shots Tuesday what he saw. "My ER is destroyed," he said. "My department was at the Moore Medical Center. I mean it's wiped out. The building is roped off so we're not doing anything there." About 250 or 300 people were inside as the storm approached. The staff was able to direct everyone to designated zones located in the center of the hospital.