What does CDA stand for in the context of airport operations?

In the context of airport operations, CDA stands for the Chicago Department of Aviation. This department is responsible for overseeing and managing the operations of O'Hare International Airport and Midway International Airport in Chicago. The Chicago Department of Aviation plays a crucial role in ensuring that the airports function smoothly, maintaining safety and security standards, managing resources, and enhancing the passenger experience.

Understanding the role of the Chicago Department of Aviation is essential because it connects various aspects of airport operations, including regulations, airport development projects, and coordination with airlines and other stakeholders. The other choices provided do not reflect the correct agency involved in airport operations or are unrelated to the specific oversight of Chicago's airports.