A police drone was used to peer through the darkness and find a vulnerable young man.
Police were called to King’s Mill Reservoir, Sutton, in the early hour of a February day after the man threatened to harm himself.
The drone pilot used a thermal imaging camera to find him on a footpath, track his movements, and direct officers to find him.
Sgt Vince Saunders, chief drone pilot at Nottinghamshire Police, said: “This was another excellent example of what our drones can achieve. By taking to the air with a drone we are able to search very large areas extremely quickly — even peering through tree canopies and undergrowth in order to find the person we are looking for.”