RAGBRAI
Lt. Cols. Derek Leivestad, 28th Bomb Wing deputy chief of safety, and David Henshaw, 28th Operations Support Squadron director of operations, assess the proposed route prior to hitting the road at Ellsworth Air Force Base, S.D., July 17, 2012. The two cyclists are training for Register’s Annual Great Bicycle Ride Across Iowa on July 22. RAGBRAI, started in 1973 by two Des Moines Register columnists, is the oldest, largest, and longest bicycle touring event in the world and now encompasses seven days of riding, averaging 468 miles. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)