K.S. Narendran never boards a flight without feeling terror. And he doesn't expect that to change without answers to what happened to the plane carrying his wife three years ago. His wife, Chandrika Sharma, was one of the 239 people aboard Malaysia Airlines Flight 370, which disappeared over the Indian Ocean after veering far off course on a flight from Kuala Lumpur to Beijing. After a fruitless search, the governments of Australia, China and Malaysia announced on Tuesday that they were suspending their efforts. Some relatives of Flight 370's passengers expressed anger, disappointment and a resolve to press authorities to resume their efforts and find out exactly what happened. Others said they understood that the search — the most expensive of its kind in aviation history — had to come to an end. "There's not a day that passes without spending significant amount of time thinking about what the state of the search might be," Narendran said on Tuesday in a phone interview. "While it's probable that we'll never see our family members again, it doesn't take away the fact that we would still like to know what happened." Li Xinmao, whose daughter and son-in-law were on the plane, called Tuesday's announcement "unacceptable" and the governments of Malaysia and China "irresponsible." Nearly two-thirds of the people aboard Flight 370 were Chinese. "No matter how much we protested, they wouldn't take our complaints, and it has become useless for us to protest," Li said. "Even so, I will continue to protest because I just can't accept the result." Search crews spent nearly three years trawling a 120,000-square kilometer area where the plane was believed to have gone down, an effort that cost an estimated $160 million. They did not find the main underwater wreckage, the black box data recorder, or any sign of the 227 passengers and 12 crewmembers aboard the aircraft. A team of international investigators said in December that the plane may have fallen in a different area based on where more than 20 items of debris have since washed ashore. But Australia's transport minister said the new analysis did "not give a specific location of the missing aircraft," and expanding the search based on that finding would be unlikely. Narendran said he thought Australian officials wanted to "bury the search" rather than suspend it. A group representing victims' families, Voice370, said extending the search was "an inescapable duty owed to the flying public." Nan Jinyan, whose brother's fiancée was killed, was more resigned. "It has become a fact that the missing plane can't be found, maybe forever," Nan said. "We have no way but to accept it." Jeanette Maguire, who lost her Australian sister and brother-in-law, said she and others knew rescue efforts were too expensive to continue indefinitely. "We were hoping and praying that that wouldn't be it and we would have found something of significance for them to be able to keep searching," Maguire said. But for many others, finding closure remains impossible. Lee Khim Fatt's wife, Foong Wai Yueng, was a stewardess on Flight 370. Three years later, Lee still hasn't held a memorial for his wife or touched her wardrobe or belongings in their home in Malaysia. "I told my children to keep praying," Lee said. "As long as nothing is found, nothing is proven."