Yellowstone, WY – The snowmobile season in Yellowstone and Grand Teton National Parks started Wednesday with the cloud of a federal judge's ruling hanging overhead. Just 13 hours before the season got underway, Washington D-C District Judge Emmet Sullivan struck down the Bush Administration's plan to allow snowmobiling to continue in the parks. Sullivan ordered the Park Service to reinstate the Clinton Administration plan that will result in a ban on the machines. Snowmobiles are still allowed this year, but in smaller numbers and all visitors must have guides. Wyoming Public Radio's Aaron Alpern gauged reaction to the ruling and has this report.