While the Senate hearings were in progress and the 1st Aero Squadron encountered difficulties with its airplanes in Mexico, Scriven issued a statement accusing the young aviators of "unmilitary insubordination and disloyal acts" in an attempt to form an air service separate from the Signal Corps. He also recommended that the age and marital status restrictions for pilots be removed to encourage older and therefore more experienced officers to volunteer for aviation duty. Brig. Gen. Ernest Albert Garlington, the Inspector general, was appointed by Army Chief of Staff Gen. Hugh L. Scott to head a board of investigation into the Aviation Section. The Garlington Board confirmed Goodier's allegations and also cited Scriven and Reber for failing to supervise the section adequately, holding them responsible for acquiring substandard aircraft. The Garlington Board's report, together with the Senate resolution and public criticism of the equipment used in Mexico, prompted Secretary of War Newton Baker to issue letters of reprimand to Scriven, Reber and Cowan. Reber was formally relieved as Chief of the Aviation Section on 5 May, and Cowan of his duties in July. Both were assigned non-aviation duties in the Signal Corps after extensive leaves of absence. Lt. Col. George O. Squier was recalled from duty as military attaché in London and appointed Chief of the Aviation Section on 20 May, with orders to reform it literally from the ground up.