Dee ihe ndị ọzọ n' paragraf a - Selfridge nọ na Presidio n'oge oké ala ọma jijiji ahụ mere na San Francisco
nke April 18, 1906. Ndị otu ya sonyere na nyocha na nnapụta yana ọrụ nhicha. N'afọ 1907, e kenyere ya ọrụ na ngalaba ụgbọelu, US Signal Corps na Fort Myer, Virginia, ebe e mechara kụziere ya ka ọ na-anya ụgbọelu. Ọ bụkwa onye nnọchi anya gọọmentị United States na Aerial Experiment Association, nke Alexander Graham Bell duziri, ọ ghọrọ odeakwụkwọ mbụ ya.