US President Bill Clinton has a look at the evidence of Air Force Lieutenant Lawrence Evert and the fallen F105D aircraft (Photo: VNA)

US President Bill Clinton has a look at the evidence of Air Force Lieutenant Lawrence Evert and the fallen F105D aircraft (Photo: VNA)

US President Bill Clinton and Dan and David Evert - Air Force Lieutenant Lawrence Evert's sons, meet with the crew POW / MIA operation at the scene (Photo: VNA)

US President Bill Clinton attends a ceremony to receive the remains of three US soldiers handed over by the Vietnamese missing people searching committee at Noi Bai International Airport (Hanoi) November 18, 2000, during his official visit to Vietnam (Photo: VNA)

US President Bill Clinton attends a ceremony to receive the remains of three US soldiers handed over by the Vietnamese missing people searching committee at Noi Bai International Airport (Hanoi) November 18, 2000, during his official visit to Vietnam (Photo: VNA)

US Secretary of State, Hillary Clinton witnesses a ceremony to hand over 3 remains of US military personnel during the Vietnam War at the Noi Bai International Airport (Hanoi) July 23, 2010 (Photo: VNA)

A ceremony to hand over 3 sets of remains of US soldiers during the war in Vietnam, Noi Bai International Airport (Hanoi), July 23, 2010. This is the 115th delivery of the remains of US soldiers to the United States (Photo: VNA)

A ceremony to hand over 3 sets of remains of US soldiers during the war in Vietnam, Noi Bai International Airport (Hanoi), July 23, 2010. This is the 115th delivery of the remains of US soldiers to the United States (Photo: VNA)

A ceremony to hand over 3 sets of remains of US soldiers during the war in Vietnam, Noi Bai International Airport (Hanoi), July 23, 2010. This is the 115th delivery of the remains of US soldiers to the United States (Photo: VNA)

A ceremony to hand over 3 sets of remains of US soldiers during the war in Vietnam, Noi Bai International Airport (Hanoi), July 23, 2010. This is the 115th delivery of the remains of US soldiers to the United States (Photo: VNA)

Representative of the Vietnamese Office For Seeking Missing Persons (VNOSMP) and representative of the US POW/MIA Accounting Agency (DPAA) sign a record of handing over 4 sets of remains of US soldiers during the 129th search, December 13, 2017, at Noi Bai International Airport (Hanoi) (Photo: VNA)

The US DPAA in coordination with the Vietnamese Office For Seeking Missing Persons (VNOSMP) held the repatriation ceremony for 3 set of remains of US military personnel, Da Nang international airport, December 11, 2018. This is the 147th time Vietnam has handed over the remains of US soldiers (Photo: VNA)