Post participated in balloon races, including the Gordon Bennett races of 1906, 1908, 1909, 1910, and 1911. He survived a number of aeronautic disasters, including the rupture of the balloon “Conqueror” in which he was flying with A. Holland Forbes in the Gordon Bennett Race in Berlin in 1908. The balloon fell 4,775 feet and crashed through the roof of a house, but the men were unharmed.
