Farmer Darrell Noteboom, 52, raises 500 sheep on his farm near Alton, Iowa.  Noteboom, who has been farming for almost 30 years, survived the farm crisis of the '80's but is concerned about the future of small towns in Iowa.  &quot; People need to support their local businesses instead of driving to the city and going to Wal-Mart,&quot; Noteboom said.   - PHOTOGRAPH BY DAVID PETERSON -   Photo by David Peterson