Nearly 1,000 people showed up on Sunday to search for a missing Sidney High School teacher who did not return home from a Saturday morning run.

Sherry Arnold, 43, was last seen at 6:30 a.m. when she left home to go for a jog. When she didn’t return, a massive search party of more than 200 people organized, finding only a shoe authorities believe she was wearing on one of her usual jogging routes northeast of town.

That area includes what is known as the truck route — Ninth Avenues south, east and northeast — in Sidney, and bike and walking paths in town.

Sidney Assistant Police Chief Bob Burnison said about 1,000 people came to help search for Arnold, including current and former students of the high school math teacher.

“It’s really hard on our community,” Burnison said, adding they just recently lost Jody Ray Verhasselt, a 46-year-old firefighter in an avalanche north of Cooke City on New Year’s Eve.

Of the thousand that showed up, only around 300 to 400 were able to be used in the search. Burnison said any beyond that would have been too many to control. They added to the countless law enforcement personnel from neighboring counties, as well as North Dakota, and members of the Montana National Guard.