The United States Air Force (USAF) Heritage of America Band's Ensemble Full Spectrum performs at a commemoration of the 67th birthday of USAF in New York, the Unite States, Sept. 18, 2014. (Xinhua/Wang Lei)

Military officials of the United States Air Force (USAF) salute at a commemoration of the 67th birthday of USAF in New York, the Unite States, Sept. 18, 2014. (Xinhua/Wang Lei)

Military officials of the United States Air Force (USAF) attend a commemoration of the 67th birthday of USAF in New York, the Unite States, Sept. 18, 2014. (Xinhua/Wang Lei)

Military officials of the United States Air Force (USAF) cut cake at a commemoration of the 67th birthday of USAF in New York, the Unite States, Sept. 18, 2014. (Xinhua/Wang Lei)

Military officials of the United States Air Force (USAF) attend a commemoration of the 67th birthday of USAF in New York, the Unite States, Sept. 18, 2014. (Xinhua/Wang Lei)