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.
Boeing Rotorcraft Systems Boeing Rotorcraft Systems (formerly Boeing Helicopters and before that Boeing Vertol) is the former name of a US aircraft manufacturer, now known as the Mobility Division of Boeing Military Aircraft, a division of Boeing Defense, Space & Security. The headquarters and main rotorcraft factory is in Ridley Park, Pennsylvania, a suburb of Philadelphia. Production of Apache attack helicopters in Mesa, Arizona, formerly part of Rotorcraft Systems, is now under the Global Strike Division of Boeing Military Aircraft.