He was supposed to rappel out of a helicopter and into a marijuana field.
Instead, something went wrong, and a state police trooper ended up falling 40 feet.
Kentucky State Police say the accident happened Tuesday afternoon in Bell County.
They say Trooper Cory Nokes was rappelling out of a helicopter, into a marijuana field, when his rappelling equipment malfunctioned.
He then fell 40 feet into the field.
Nokes suffered a broken leg and a dislocated ankle. He was flown to UK Hospital and underwent surgery.
Nokes is said to be in fair condition at the hospital. He's expected to come back to work after recovering.
The mission in Bell County continued despite Nokes' injury. Police ended up destroying nearly 200 marijuana plants.