JESE OWENS RETURS TO BERLIN

Long and Owens corresponded after 1936. In his last letter, Long wrote to Owens and asked him to contact his son Karl after the war and tell him about his father and "what times were like when we not separated by war. I am saying—tell him how things can be between men on this earth".[15] After the war, Owens travelled to Germany to meet Karl Long. Long is seen with Owens in the documentary Jesse Owens Returns To Berlin where he is in conversation with Owens in the Berlin Olympic Stadium

Carl Ludwig "Luz" Long (27 April 1913[1] – 14 July 1943) was a German Olympic long jumper, notable for winning the silver medal in the event at the 1936 Summer Olympics in Berlin and for giving technical advice to his competitor, Jesse Owens, who went on to win the gold medal for the long jump.[2] Luz Long won the German long jump championship six times in 1933, 1934, 1936, 1937, 1938, and 1939.

Long was killed while serving in the German Army during World War II

https://en.wikipedia.org/wiki/Luz_Long#Early_life