Senior Airman Sara Chadwick, a 22-year-old Madison, Neb., native, a medical technician with the Lincoln-based 155th Air Refueling Wing, inspects a portion of levee near Omaha’s now-flooded Freedom Park June 30. Chadwick is one of 28 Nebraska Air National Guardsmen that volunteered to serve on state active duty in the Nebraska National Guard’s ongoing response to the 2011 flood (Army photo by Sgt. Koan Nissen).