Rappel certification in the Deschutes National Forest will result in heavy helicopter activity west of Bend starting April 17 and continuing into next week.

During the training days, the public can expect up to five helicopters hovering in the air west of Forest Road 41 and south of the Cascades Lake Highway. The helicopter activity may occur at any time between 9 a.m. and 6 p.m., including weekends.

No trail or road closures are anticipated, but people traveling on Forest Road 41 and nearby trails should adhere to posted signs and avoid restricted areas.

The participants are wildland firefighters who rappel out of helicopters to reach fires in remote locations. The training will provide annual recertification for 45 spotters and 120 veteran rappellers.