Where is the location of the headquarters of the company that built the auxiliary propulsion system for the STV Fair Jeanne?
Detroit Diesel Detroit Diesel Corporation (DDC) is an American diesel engine manufacturer headquartered in Detroit, Michigan, United States and a subsidiary of Daimler Trucks North America, itself a wholly owned subsidiary of the German Daimler AG. The company manufactures heavy-duty engines and chassis components for the on-highway and vocational commercial truck markets. Detroit Diesel has built more than 5 million engines since 1938, more than 1 million of which are still in operation worldwide. Detroit Diesel’s product line includes engines, axles, transmissions, and Virtual Technician.
Valero Energy Valero Energy Corporation is a Fortune 500 international manufacturer and marketer of transportation fuels, other petrochemical products, and power. It is headquartered in San Antonio, Texas, United States. The company owns and operates 16 refineries throughout the United States, Canada, United Kingdom, and the Caribbean with a combined throughput capacity of approximately 3 Moilbbl per day, 11 ethanol plants with a combined production capacity of 1.2 e9USgal per year, and a 50-megawatt wind farm. Before the 2013 spinoff of CST Brands, Valero was one of the United States' largest retail operators with approximately 6,800 retail and branded wholesale outlets in the United States, Canada, United Kingdom, and the Caribbean under the Valero, Diamond Shamrock, Shamrock, Ultramar, Beacon, and Texaco brands.