Dr. John H. Cook, III has served Loudoun county not only as a world-class physician but as a moving force in the development of modern medical care in one of the nation’s fastest growing counties. The product of a World War II and Korea era Marine family, Dr. Cook first served his country as a sailor:  a Naval Academy graduate and a highly decorated submarine commander. He became a doctor at 37, an internist with special interest in critical care and geriatric medicine.  He was a driving force in the creation of the medical office building at what was then the “new” Loudoun Hospital at Lansdowne. He then co-led the design and construction of the Cornwall Pavilion on the Inova campus in Leesburg.