SIOUX FALLS, S.D. (KELO) -- First responders received some hands-on training Monday night at the W.H. Lyon Fairgrounds in Sioux Falls, on the ground and above. It's a familiar sight and sound in the sky above Sioux Falls, the whirring of helicopter blades as Avera Careflight and Sanford AirMed atten d to emergencies. But this isn't [...] ...read more read less