When the grandson of U.S. President Harry Truman, who ordered the nuclear attacks on Hiroshima and Nagasaki, and a descendent of the only serviceman to fly on both bombing runs came face to face with some of the survivors, it was a moment of truth.

Clifton Truman Daniel, the oldest grandson of Truman, who authorized the world's first atomic bombings in August 1945, and Ari Beser, a grandson of Jacob Beser, who was onboard both the Enola Gay and Bockscar B-29 bombers used in the attacks, were visiting Japan to commemorate the 67th anniversary of tragedies.

During their stay, Daniel, 55, and Beser, 24, met with various A-bomb survivors to hear firsthand accounts of their horrific ordeals following the Aug. 6 and 9, 1945, bombings.