MasTec, Inc. is an infrastructure construction company. The Company's primary activities include the engineering, building, installation, maintenance and upgrade of communications, energy and utility infrastructure, such as wireless, wireline/fiber and satellite communications; petroleum and natural gas pipeline infrastructure; electrical utility transmission and distribution; power generation, and industrial infrastructure. The Company manages its operations under five operating segments: Communications; Oil and Gas; Electrical Transmission; Power Generation and Industrial, and Other. The Company offers its services primarily under the MasTec service mark and it has operations across 460 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; natural gas, natural gas liquids and petroleum pipeline; and electrical transmission, among others.