Crew a of the Junkers Ju 52 aircraft "Kaleva" by the Finnish airline Aero photographed in spring 1940. With U.S. and French diplomatic couriers aboard, the civilian plane was shot down over the Baltic Sea by Soviet bombers on June 14, 1940 just days before Moscow annexed the three Baltic states. Third from the left stands Bo von Willebrand who was the captain of "Kaleva" and perished in the crash. The mysterious case which claimed the lives of nine people is being solved after 84 years as an Estonian diving group has located the aircraft's wreckage off a tiny island close to Tallinn. (Finnish Aviation Museum via AP)
The cabin of the Junkers Ju 52 aircraft "Kaleva" by the Finnish airline Aero photographed in July 1936. With U.S. and French diplomatic couriers aboard, the civilian plane was shot down over the Baltic Sea by Soviet bombers on June 14, 1940 just days before Moscow annexed the three Baltic states. The mysterious case which claimed the lives of nine people is being solved after 84 years as an Estonian diving group has located the aircraft's wreckage off a tiny island close to Tallinn. (Finnish Aviation Museum via AP)
This photo shows U.S. diplomat Henry W. Antheil Jr. dated 1940. The 27-year-old Antheil was one of the nine people aboard the Finnish Junkers Ju 52 passenger airliner named Kaleva that was shot down over the Baltic Sea by Soviet bombers on June 14, 1940. The plane was en route from the Estonian capital, Tallinn, to Helsinki when it was downed just days before Moscow annexed the Baltic states. All nine people aboard Finnish aircraft died. Antheil, the younger brother of acclaimed composer George Antheil, is considered to be among the first U.S. casualties of World War II. (Library of Congress via AP)
The Junkers Ju 52 aircraft "Kaleva" by the Finnish airline Aero is parked at the Katajanokka seaplane harbor in Helsinki equipped with floating bottom skis. Photo dated July 14, 1936. With U.S. and French diplomatic couriers aboard, the civilian plane was shot down over the Baltic Sea by Soviet bombers on June 14, 1940 just days before Moscow annexed the three Baltic states. The mysterious case which claimed the lives of nine people is being solved after 84 years as an Estonian diving group has located the aircraft's wreckage off a tiny island close to Tallinn. (Finnish Aviation Museum via AP)
The Junkers Ju 52 aircraft "Kaleva" by the Finnish airline Aero is parked at Helsinki's Malmi Airport in this 1939 photo. With U.S. and French diplomatic couriers aboard, the civilian plane was shot down over the Baltic Sea by Soviet bombers on June 14, 1940 just days before Moscow annexed the three Baltic states. The mysterious case which claimed the lives of nine people is being solved after 84 years as an Estonian diving group has located the aircraft's wreckage off a tiny island close to Tallinn. (Finnish Aviation Museum via AP)