Pontfaverger Odis Först writes: "1039: Today it was our turn. The fog had lifted somewhat, so the Boelcke brothers flew over to their favorite artillery unit to inform them that the enlisted pilots were ready for flight training. They arrived at our field around 0900 and explained exactly what we would be doing. At 0930 they departed for the field where we would be conducting our exercise. We didn't have to know anything about the flag signals. We only had to follow the directions of our officer-observers. The operation lasted all day, and our total time over three flights was 2 hours 26 minutes.