Unknown Soldier: Searching for a Father 2005 streaming

From HBO's America Undercover. On June 30, 1969, Lt. Jack Hulme was killed in Vietnam, having never met his newborn son. Thirty years later, filmmaker John Hulme finally seeks out what happened to his father, and who he really was. From family members and childhood friends to the soldiers who fought beside him, John tracks down everyone, chasing his fathers ghost across the country. What he discovers is a life that mirrored a generations struggles...husbands vs. wives, soldiers vs. protestors, America vs. Vietnam. But he also finds wounds that are painfully fresh, especially his mothers. Together, using the accounts of first-hand witnesses, they travel back to Vietnam, to the place where Jack spent the last few moments of his life so they can finally come to terms with his death.