Cheryl A. Lehman, PhD, RN, CNS-BC, RN-BC, CRRN is the clinical coordinator for the Hill Country Mission for Health, where she oversees all clinical activities and all patient care. A nurse for 38 years, her clinical experiences include medical-surgical nursing, rehabilitation nursing, and geriatric nursing. She is licensed in the State of Texas as a registered nurse and as a clinical nurse specialist in medical-surgical nursing; she is also board certified as a rehabilitation nurse, as a gerontological nurse, and as a clinical nurse specialist. She is the immediate past president of the Association of Rehabilitation Nurses (ARN), is editor and author of the ARN seventh edition of the Rehabilitation Nursing Core Curriculum textbook, and was the chair of the Data Safety Management Board for the Strong Star Consortium and the Consortium to Alleviate PTSD research studies on post-traumatic stress disorder (funded by the U.S. Department of Defense) through the Department of Psychiatry at University of Texas Health Science Center at San Antonio (2010-2016).