The boxes will be held at Hawaii's Joint Base Pearl Harbor-Hickam, where officials will conduct further DNA testing to identify the remains.
"Problems such as inability to get DNA from bones and lack of a DNA reference sample from the family can be major stumbling blocks", said Chuck Prichard, director of public affairs for the Defense POW/MIA Personnel Accounting Agency, the USA military's main unit for finding and identifying missing members. That's according to a report by The Washington Post, which cited officials who spoke on condition of anonymity in order to describe classified intelligence. The U.S. military believes the bones are those of U.S. servicemen and potentially servicemen from other United Nations member countries who fought alongside the U.S. on behalf of South Korea during the war.
Why are USA remains in North Korea?
Pompeo said there was "an bad long way to go" before North Korea could no longer be viewed as a nuclear threat. They believe North Korea is building at least one of its Hwasong-15 missiles there.
Trump traveled to Singapore in June for a summit with Kim and, following the meeting, Trump announced that North Korea no longer posed a nuclear threat - despite a lack of evidence proving that the North Koreans would cease to continue its nuclear program.
Kim Jong-un agreed to "denuclearise" North Korea.
A soldier carries a casket containing the remains of a US soldier who was killed in the Korean War during a ceremony at Osan Air Base in Pyeongtaek, South Korea, July 27, 2018.
Coordinating Human Development and Culture Minister Puan Maharani visited North Korea on Tuesday to deliver a personal invitation from President Joko "Jokowi" Widodo for North Korean leader Kim Jong-un to attend the Asian Games 2018 hosted by Indonesia.More news: LeBron James Explains Why He Regrets Giving His Name to His Son
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The North Korea flag flutters next to concertina wire at the North Korean embassy in Kuala Lumpur, Malaysia March 9, 2017.
Image copyright Getty Images Image caption There are thought to be around 5,300 remains of U.S. soldiers in North Korea Does North Korea have any others collected?
Space launch vehicles were assembled at the shelter - which hadn't been moved since December 2017 - before they are moved to the launchpad, according to 38North analyst Joseph Bermudez Jr.
What are experts saying about this?
North Korea appears to be building new liquid-fueled intercontinental ballistic missiles at a factory that produced the country's first missiles capable of reaching the United States, US intelligence officials say.
Sixteen other United Nations member countries fought alongside US service members on behalf of South Korea. "These types of things tell us that there are steps that still must be taken on the road to denuclearization", Brooks said.
An armistice that ended the Korean War has yet to be replaced with a peace treaty, leaving the peninsula in a technical state of war. Indeed, the commitments regarding its nuclear weapons program were so vague as to be nearly meaningless, in my view.
How many USA servicemen are missing from the Korean War? The US military presence in South Korea is the backbone of its security commitment to South Korea, which doesn't' have nuclear weapons.