SHAW AIR FORCE BASE, S.C.-- Senior Airman Ryan Markich (left), 20th Equipment Maintenance Squadron, Chief Master Sgt. Don DeMarte (center), 20th Maintenance Operations Squadron, and Staff Sgt. Samantha Brown, 20th Services Squadron, go for a walk at the Chapel Trail Tuesday in participation of the Health and Wellness Center?s Walk-a-thon. October is national walking month. (U.S. Air Force photo/Tarsha Storey)