MasTec, Inc. is an infrastructure construction company. The Company operates primarily across North America through a range of industries. Its primary activities include the engineering, building, installation, maintenance and upgrade of communications, energy and utility infrastructure, such as wireless, wireline or fiber and satellite communications; petroleum and natural gas pipeline infrastructure; electrical utility transmission and distribution; power generation, and industrial infrastructure. It manages its operations under five operating segments: Communications, Oil and Gas, Electrical Transmission, Power Generation and Industrial, and Other. It offers its services primarily under the MasTec service mark and has operations across approximately 470 locations. It provides services under master service and other service agreements, which are generally multi-year agreements. It offers its service offerings in markets, including wireless services and electrical transmission.