Moose, WY – Wildlife managers have been putting in overtime to prevent wolves in Grand Teton National Park from killing cattle, following the first such incident in the park earlier this summer. Agents with the U-S Fish and Wildlife Service have camped overnight with the cattle herd and used bright lights and firecracker-like blasts to scare wolves away. And it seems to be working. Ranchers have not reported any more depredations since the initial attack on a 400 pound calf August 10th. Grand Teton officials also are encouraging ranchers to assign a rider to stay with the cattle overnight to also help ward away wolves.