Sheila Pankoke, McDonald Army Health Center Preventive Medicine Community Health nurse, cleans the arm of a patient before drawing blood at Fort Eustis, Va., May 11, 2015. Pankoke has worked in the nursing field since 2001. National Nurses Week ends on the birthday of Florence Nightingale, who was the founder of modern nursing. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)