Maternal morbidity and mortality remain a significant problem in U.S. health care. This article describes Texas and Oklahoma’s adoption of a perinatal quality improvement initiative, including the implementation of the Alliance for Innovation of Maternal Health (AIM) patient safety bundles and use of teamwork and communication tools in obstetric units. Findings suggest that adoption of initiative components varies across obstetric units; the majority of units had standardized processes for serious events (obstetric hemorrhage, massive transfusion, severe hypertension) but fewer units offered regular training on effective teamwork and communication for their staff.