The Japan Air Self-Defense Force Blue Impulse assigned to the 4th Air Wing, 11th Squadron from Matsushima Air Base, Japan perform a wide to delta loop during the Pacific Partners Air Festival at Misawa Air Base, Japan, Sept. 10, 2017. Five planes gradually enter a broad close order formation while drawing a loop. This is an acrobatic flight that shows smoke trails spreading out in five different directions. (U.S. Air Force photo by Amn Xiomara M. Martinez)