BILLINGS, Mont. (AP) — Grizzly bears are slowly expanding the turf they roam in the northern Rocky Mountains but scientists say they need continued protections, They have also concluded that no other areas of the country would be suitable for the fearsome animals. The Fish and Wildlife Service on Wednesday released its first assessment in nearly a decade on the status of grizzly bears in the contiguous U.S. The bruins are shielded from hunting as a threatened species except in Alaska. Grizzly populations grew over the last 10 years in the Yellowstone region and around Glacier National Park. Scientists are focusing on bolstering existing populations and not on reintroducing bears elsewhere.