Malaysia's Transport Minister Liow Tiong Lai (3rd L) speaks to media after the MH370 search operations signing ceremony between Malaysia's Ministry of Transport and U.S. firm Ocean Infinity, in Putrajaya, Malaysia, on Jan. 10, 2018. A U.S. exploration firm was mandated by the Malaysian government on Wednesday to resume search for the missing Malaysia Airlines flight MH370 aircraft, possibly the last attempt to solve one of the biggest mysteries in aviation history. (Xinhua/Chong Voon Chung)