What is the primary location of the UPK?

The primary location of the UPK, or Universal Passenger Knowledge, is the ISK, which stands for Istanbul Airport. This facility is significant in the context of global air travel, as it serves as a major hub connecting various international flights. With its strategic location, ISK is designed to handle an extensive volume of passenger traffic, providing a comprehensive range of services to travelers.

It's crucial to consider that JFK, LAX, and ORD are all prominent airports in their own right, located in New York, Los Angeles, and Chicago, respectively. Each of these airports provides vital services and connections for air travel within the United States and internationally. However, in relation to the context of UPK, they are not identified as the primary location, emphasizing the unique role that ISK plays in this specific domain.