While attending a fire company drill, Firefighter Wisting responded to a call for a smoke investigation at the end of North Railroad Avenue.  Upon returning to the station, he complained of not feeling well and went home.  Wisting slept until 3:00 p.m. the next day, got up, made the bed, and took the dog out, but while in the yard with the dog he collapsed.  The Rio Grande Fire Company along with the Rescue Squad responded and performed CPR on Wisting.  He was transported to Burdette Tomlin Hospital where he later expired from a suspected heart attack.