On January 18, 1905, the brothers wrote to congressman Robert M. Nevin, "The series of aeronautical experiments upon which we have been engaged for the past five years has ended in the production of a flying-machine of the type fitted for practical use. The numerous flights in straight lines, in circles, and over 'S'-shaped courses, in calms and in winds, have made it quite certain that flying has been brought to a point where it can be made of great practical use in various ways, one of which is that of scouting and carrying messages in time of war."