South Yorkshire's Police and Crime Commissioner accompanied officers on a raid of a house in which cannabis worth £20,000 was found.
Dr Alan Billings went on a police raid in Eastwood, Rotherham, on Wednesday, as part of an exercise to find out what life is like for frontline bobbies.
Officers found 20 cannabis and £1,000 in cash during the raid.
Dr Billings said: “It was a planned visit aimed at giving me the opportunities to meet with officers and staff and accompany them in their work.
"I heard about the issues they face and the work they do.
“Inspectors explained to me the importance of neighbouring teams and how key they are to picking up local intelligence.
“Then finally the Eastwood team took me for a tour of the area, resulting in the execution of a warrant.
"It was remarkable to see how the cultivation was heated and the lengths that people will go to earn an income from criminality."
Sergeant Dave Baines said: “The Commissioner accompanied us on a pre-planned warrant at an address in Eastwood.
"Intelligence was received that the occupant was growing cannabis.
“A search of the property resulted in 20 cannabis plants being recovered along with an estimated £1,000 in cash.
“A 35-year-old Algerian man has been arrested for production of cannabis and document and immigration offences.”