MOOSE, Wyo. (AP) — A search for a 16-year-old Ohio girl has entered a second day in Grand Teton National Park.

Fauna Jackson is part of a youth conservation group called Groundwork USA. She's been missing since she took a break from working on a trail in the park Thursday morning.

Searchers are using dogs and helicopters to look for her in the area of the Triangle X Ranch in Jackson Hole.

Robin Corathers with Groundwork Cincinnati said Friday the group is very concerned about Jackson. The teen took part in an eight-week youth employment program with the organization this summer.

She was one of three Cincinnati youths chosen to participate in a nine-day program in Grand Teton involving other youth from around the country.

Additional searchers were set to arrive Friday.