Others, such as Walter Wellman and Melvin Vaniman, set their sights on loftier goals, attempting two polar flights in 1907 and 1909, and two trans-Atlantic flights in 1910 and 1912.
Outros, coma Walter Wellman e Melvin Vaniman, propuxéronse lograr maiores desafíos, intentando dous voos polares en 1907 e 1909, e dous voos transatlánticos en 1910 e 1912.