The whistle blows as runners take off at the beginning of the Commander's Fitness Challenge on Joint Base Charleston, S.C., Sept. 9, 2010. This month’s run was in remembrance of the Sept. 11, 2001 tragedies. Prior to the start of the run, Maj. Tara White, Force Support Squadron commander, urged runners to think about what this run should mean to them and to push their hardest. This month’s run also served as the Combined Federal Campaign kickoff. Each year, thousands of non-profit human health and welfare charities benefit from the millions of dollars that have been donated through CFC. (U.S. Air Force Photo/Airman 1st Class Lauren Main)