Crates with rhinos inside are loaded onto trucks at Kigali International Airport in Kigali, capital city of Rwanda, on June 24, 2019. Five critically endangered black rhinos from Europe safely landed in the Rwandan capital, Kigali, early Monday. The rhinos will be released into Akagera National Park, in eastern Rwanda, Rwanda Development Board (RDB) said on a Twitter post. (Xinhua/Cyril Ndegeya)