In 1947, the United States Air Force (USAF) was created through the National Security Act, thanks in part to the efforts of President Harry S. Truman. In 1997, the Golden Air Tattoo at Nellis Air Force Base (AFB), Nevada, celebrated the 50th anniversary of the Air Force by pairing modern military jets with World War II fighters. These formation flights connected the past with the present and started a tradition that is now known as the Heritage Flight. As the service celebrates their 75th anniversary, Air Force Heritage Flights are one of the most sought after displays at air shows across North America. Over their 25 year existence, Heritage Flights have featured every generation of fighter aircraft since World War II, honouring the men and women who have served, or are currently serving, while inspiring future generations of airmen and women.