Freight and cargo inspectors may work for shipping companies, airlines, rail lines, trucking companies, or for any company that ships and recieves a lot of freight. Inspectors are also employed by state and national governments. Extensive travel may be involved, although for inspectors working at small companies the traveling may simply mean walking from a warehouse out to the loading dock with a tape measure and clipboard. Freight and cargo inspectors who work for governments and other regulatory agencies may need to fly frequently and across large distances, particularly if they work for the government of the United States, Canada or another large nation. These professionals are often sent on fact-finding assignments throughout the country, where they must visit airports, warehouses, shipping docks and other relevant locations.