My wife and I were hiking out of the river around selah butte “ish”when a helicopter came around the bend. She thought it was cool because we were looking down on it. The way it was flying I thought they were counting sheep. Then they started herding them. I could see the sheep running. The helicopter acted like a cuttin’ horse herding up this steep cut. All of a sudden boom. A rifle shot. Then the helicopter flew up to a spot where he could hover and a guy bailed out. Probably 20 minutes went by and the helicopter circled back and landed in a flat area on the ridge. Awhile later they came to our side of the river and flew by us. They were obviously looking for more sheep. I’d like to assume they were collaring them maybe, though I don’t know why per say, or maybe taking samples. Maybe culling again, I don’t know. I didn’t think a tranquilizer gun was as loud as a rifle shot.