Katie Welch, Tumbling Tots instructor, helps Alena Bank, 3, balance on a horizontal bar inside the Tumbling Tots Tumble Bus during a class on Ellsworth Air Force Base, S.D., Nov. 7, 2012. Welch, who has been involved with gymnastics for the majority of her life, said she enjoys helping children discover the joy of the sport. (U.S. Air Force photo by Airman Ashley J. Woolridge/Released)