American Airlines Group is a holding company. Through its subsidiaries, the company's business activity is the operation of a primary network carrier, providing scheduled air transportation for passengers and cargo. The company's regional carriers provide scheduled air transportation under American Eagle. The American Eagle carriers include the company's regional carriers Envoy Aviation Group Inc., PSA Airlines, Inc. and Piedmont Airlines, Inc., as well as third-party regional carriers including Republic Airline Inc., Mesa Airlines, Inc., SkyWest Airlines, Inc. and Compass Airlines, LLC. The company's cargo division provides freight and mail services, with facilities and interline connections available across the globe.

Delta Air Lines provides scheduled air transportation for passengers and cargo. The company serves the Transatlantic, Transpacific and Latin America markets directly on the company and through joint ventures with airline partners. Internationally, the company has hubs and market presence in Amsterdam, London-Heathrow, Mexico City, Paris-Charles de Gaulle and Seoul-Incheon. These arrangements are commercial joint ventures that include joint sales and marketing coordination, co-location of airport facilities and other commercial cooperation arrangements. The company has other businesses arising from its airline operations, including providing maintenance and engineering support for its regional aircraft.

Energy Transfer is a holding company. Through its subsidiaries, the company is engaged in natural gas operations, including natural gas midstream and intrastate transportation and storage and interstate natural gas transportation and storage, and crude oil, natural gas liquid (NGL) and refined products transportation, terminalling services and acquisition and marketing activities. In addition, the company owns investments in other businesses. The company's segments include: intrastate transportation and storage; interstate transportation and storage; midstream; NGL and refined products transportation and services; crude oil transportation and services; investment in Sunoco LP; investment in USAC; and all other.

Enterprise Products Partners is a provider of midstream energy services to producers and consumers of natural gas, natural gas liquids (NGLs), crude oil, petrochemicals and refined products. The company's midstream energy operations include: natural gas gathering, treating, processing, transportation and storage; NGL transportation, fractionation, storage, and export and import terminals; crude oil gathering, transportation, storage, and export and import terminals; petrochemical and refined products transportation, storage, export and import terminals, and related services; and a marine transportation business that operates primarily on the U.S. inland and Intracoastal Waterway systems.

FreightCar America manufactures railcars and railcar components. The company designs and manufactures a variety of railcar types for transportation of bulk commodities and containerized freight products primarily in North America, including open top hoppers, covered hoppers, and gondolas along with intermodal and non-intermodal flat cars. The company's Manufacturing segment includes new railcar manufacturing, used railcar sales, railcar leasing and railcar rebuilds. The company's products and services include: VersaFlood Hopper Cars, Covered Hopper Cars, Dynastack Series, Steel Products Cars, Boxcars, Aluminum Coal Cars, Stainless Steel and Hybrid Stainless Steel/Aluminum Coal Cars, and Other Railcar Types.

GATX is a global railcar lessor. The Rail North America segment provides railcars pursuant to full-service leases under which it maintains the railcars, pays ad valorem taxes and property insurance, and provides other ancillary services. The Rail International segment leases railcars pursuant to full-service leases under which it maintains the railcars and provides services according to customer requirements. The Portfolio Management segment leases aircraft spare engines, as well as five liquefied gas-carrying vessels. The American Steamship Company segment provides waterborne transportation of dry bulk commodities such as iron ore, coal, limestone aggregates, and metallurgical limestone.

Greenbrier Companies is a holding company. Through its subsidiaries, the company designs, manufactures and markets railroad freight car equipment in North America, Europe, the Gulf Cooperation Council and South America. The company has three segments: Manufacturing, which produces conventional railcars, tank cars, intermodal railcars, automotive and is involved in marine vessel fabrication; Wheels, Repair and Parts, which includes reconditioning of wheels and axles in addition to new axle machining and finishing and downsizing; and Leasing and Services, which includes railcar maintenance management, railcar accounting services, total fleet management, administration and railcar remarketing.

L. B. Foster is a manufacturer and distributor of products and service provider for transportation and energy infrastructure. The company's business segments are: Rail Products and Services, which is comprised of several manufacturing, distribution, and service businesses that provide a variety of products and services for freight and passenger railroads and industrial companies throughout the world; Construction Products, which is composed of Piling and Fabricated Bridge Products and Precast Concrete Products business units; and Tubular and Energy Services, which is composed of Protective Coatings and Measurement Systems and Test, Inspection, and Threading Services business units.

Wabtec primarily serves the global freight rail and passenger transit industries. The company provides its products and services through two segments: Freight, which primarily manufactures and provides aftermarket parts and services for new locomotives; provides components for new and existing locomotives and freight cars; builds new commuter locomotives; and supplies rail control and infrastructure products, among others: and Transit, which primarily manufactures and services components for new and existing passenger transit vehicles, mainly regional trains, high speed trains, subway cars, light-rail vehicles and buses; and supplies rail control and infrastructure products, among others.