 Complete the following phrase:  On 12 August Major John N. Reynolds, squadron commander, led a formation of squadron aircraft to try out a new idea that had been suggested. His aircraft was carrying bombs, and over Thiaucourt-Regniéville, he attacked several enemy targets and three bombs registered direct hits. On the way back to Gondreville, four German Pfalz D.VIII scout aircraft attacked the formation, and the squadron lost one observer, Lt Baker was mortally wounded. Although taken to a hospital upon landing, he died of his wounds on the 15th. During the remainder of August, good flying weather kept the squadron quite busy, and by the end of the month, practically every square foot of the sector had been photographed. Aerial combat was engaged in nearly every mission, however no German enemy aircraft were shot down. The 91st was reinforced with additional pilots and observers in preparation for a rumored offensive at 