Leaders at Ascension Health have set some lofty goals for the large health system: cut serious safety events by 40 percent by 2014. This comes after the nation’s largest nonprofit health care system reduced preventable deaths by more than 1,500 patients annually. Jane Jeffries, editor of Trustee, spoke with Ciro Sumaya, M.D., chair of Ascension’s board quality committee about the drive toward becoming a high reliability organization. Running time: 4:28.