You searched for: “inspectors
inspector (s) (noun), inspectors (pl)
 1. Someone who looks carefully at something in order to learn more about it or to find problems, etc.: "Dave was a building inspector who was responsible to see if the structures were safe for those who live or work in them."
2. A police officer who is charge of several departments: "Spencer was an inspector who was supervising other police who were examining the scene of a major bank robbery."