Two people died and one was injured after a Civil Air Patrol plane crashed while conducting an aerial photography training exercise amid the rugged peaks of Larimer County, Colo., on Saturday, officials said.

The Civil Air Patrol is a public service organization made up of volunteer pilots and others who help conduct emergency service operations at the request of government agencies.

The crash, which killed the pilot and an aerial photographer, happened about 11:12 a.m. on Saturday in the area of Storm Mountain, about 30 miles southwest of Fort Collins.

Emergency workers had to hike to the crash site, the authorities said. Responders located the sole survivor, a co-pilot, according to the Larimer County Sheriff’s Office.

In a statement, the office of Gov. Jared Polis of Colorado identified the pilot as Susan Wolber and the photographer as Jay Rhoten.

The co-pilot, who was identified as Randall Settergren, was airlifted to a hospital. His condition was not immediately clear on Sunday though the sheriff’s office said he had “severe injuries.”

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