Some pilots fly helicopters while others fly larger commercial aircraft to transport tens or even hundreds of passengers. Other pilots fly cargo planes to move large amounts of mail, automobiles, industrial equipment and other goods from one area to another. The most well-known pilots are those who work for an airline company, flying passengers who are commuting or vacationing. Their primary responsibility is to operate the aircraft, but their day consists of many hours performing other tasks. Pilots check the weather and confirm flight plans before departing. They also perform pre-flight inspections and check flight logs prior to departure. During the flight, pilots are responsible for the safety of all crew and passengers on board.