The U.S. Air Force Thunderbirds perform aerobatics during the 57th annual Abbotsford International Airshow in Abbotsford, Canada, Aug. 11, 2019. The airshow first took flight in 1962, launched by a local flying club to draw attention and business to the town's airport. It later became one of the most important aviation shows in North America, drawing top pilots and airplanes from around Canada, the United States and Europe. (Xinhua/Liang Sen)