Staff members work during a maritime monitoring mission of the satellite launch on China's spacecraft tracking ship Yuanwang-3, June 25, 2019. China sent a satellite of the BeiDou Navigation Satellite System (BDS) into space from the Xichang Satellite Launch Center in Sichuan Province Tuesday. Yuanwang-3, China's second-generation space tracking ship, has completed maritime monitoring mission of the satellite launch from the the southern Pacific Ocean. (Xinhua/Liu Shiping)