Parachutists prepare to perform during an international air show in Wonsan, the Democratic People's Republic of Korea (DPRK), on Sept. 25, 2016, the second day of the international air show. The Wonsan International Friendship Air Festival, the first of its kind in the DPRK, runs from Saturday through Sunday at Kalma International Airport, which was redesigned and reconstructed from a military airfield to promote tourism. (Xinhua/Zhu Longchuan)