Each class spent about two weeks on a gunnery expedition at Ellington Field between Houston and Galveston. Ellington Field was one of the few double fields built during the war, but was later abandoned and, except for a National Guard squadron, was entirely deserted. We set up our mess in the clubhouse and made the old building which had served as officers’ quarters as comfortable as possible. This was in winter and the weather was cold, even in Texas, unusual though it might have been. There were no stoves available so we contrived all sorts of makeshifts to hold a little fire in. If nothing better was obtainable, we shovelled several inches of earth on the floor and devised a hood of some kind leading through a few lengths of tin pipe to the chimney. Of course these fires could not be left unguarded, so it was necessary to put them out in the morning to be rekindled at the close of operations for the day. Our gunnery work was divided into three parts: ground targets, shadow targets and tow targets. The ground targets were large sheets of paper similar to those used on a rifle range and were set up at an angle on the ground. We shot at these with both the Browning and Lewis machine guns. The Browning guns on a De Haviland were mounted rigidly in front of the pilot and were synchronized with the engine to shoot between the blades of the propeller. They were capable of firing up to twelve hundred rounds a minute, depending on the motor R.P.M. when they were fired. Several of us would form a large circle with our planes, and starting our dive from about one thousand feet, would fire short bursts into the target on the ground. After completing our bursts we would zoom back up into the circle while the next ship started its dive. Each plane had its individual target. After emptying the Browning guns we gave our observers a chance with their Lewises by circling low around the targets. On the next flight the pilot and observer traded places. The Lewis gun is mounted on a turret on the rear cockpit. Two guns were usually used together and they could be pointed in any direction. After a few days on ground targets we were sent out over Trinity Bay for shadow targets. One plane is flown fairly high over the water while another fires at its shadow. The splashes from the bullets are easily seen and the accuracy of marksmanship very apparent. The tow targets are by far the most difficult of the three varieties, and require skillful maneuvering and excellent marksmanship. They consist of a cloth sleeve similar to a wind sock which is towed a few hundred feet behind a De Haviland flying at sixty or sixty-five miles an hour.