Beginning Sept. 26, 2013, the 633rd Medical Group at Langley Air Force Base, Va., will transition their entire campus to a tobacco-free zone. According to the Centers for Disease Control and Prevention, roughly 443,000 people die from tobacco use every year, making it the leading preventable cause of death, disease and disability in the United States. (U.S. Air Force photo by Airman 1st Class Kimberly Nagle/Released)