CNN  — 

North Korea has turned over what they say are an initial 55 cases holding remains believed to be of US troops killed during the Korean War.

After an initial assessment at an air base in South Korea, the remains will be flown to a US military laboratory in Hawaii for DNA analysis for what could be a lengthy and challenging process of identifying the remains and returning them to families.

So what could that process look like?

Their remains, military tags and uniforms will be examined

Scientists at the Defense POW/MIA Accounting Agency lab (DPAA) use forensic anthropology, forensic dentistry, DNA and other scientific methods.

The facility, named after the late Sen. Dan Inouye of Hawaii, describes itself as the largest forensic anthropology lab in the world. Scientists there analyze remains of missing service members from World War II, Korea and Vietnam, to match their DNAs and to return them to loved ones.