JACKSON, Wyo. (AP) — Commercial jets landing at Jackson Hole Airport may be changing course to reduce noise over the Snake River.

Up to a dozen commercial jets land at the airport over a period of a few hours in Grand Teton National Park, disturbing sports enthusiasts and visitors.

A professional planner is being hired to draw up new flight plans, which could take two years.

The Jackson Hole News and Guide reports recent changes are not enough because more jets are using the airport.