![Judge Blocks Use of Helicopter in Bison Hazing Operation [AUDIO]](http://townsquare.media/site/99/files/2012/05/bison-cows.jpg?w=980&q=75)
Judge Blocks Use of Helicopter in Bison Hazing Operation [AUDIO]
A federal judge has blocked Montana officials from using a helicopter to drive bison back into Yellowstone National Park. Doug Randall reports. A Union Pacific worker's efforts to improve safety at a Wyoming rail yard is being recognized. Business Reporter Sharon Fain has the details. Click past the jump to listen to Wyoming Radio News.