United Parcel Service, Inc. was incorporated in Delaware. It was founded in 1907 as a private messenger and delivery service in Seattle, Washington. The Company offers an array of services in the package and freight delivery industry. U.S. Domestic Package operations include air and ground delivery of small packages up to 150 pounds in weight and letters to and from all 50 states. It also provides guaranteed, time-definite delivery of certain heavy-weight packages. International Package operations include delivery to more than 200 countries and territories worldwide, including shipments wholly outside the United States, as well as shipments from or to the United States with another country as the destination or origin point. The Company provides domestic services in 23 major countries outside the United States. The Company operates an air fleet of about 570 aircraft. Its main air hub is in Louisville, KY. Regional air hubs are located in Columbia, SC; Dallas, TX; Hartford, CT; Ontario, CA; Philadelphia, PA; and Rockford, IL. Its largest international air hub is in Cologne, Germany, with other regional international hubs in Miami, FL; Canada; Hong Kong; Singapore; Taiwan; China; and the Philippines.