I think we had persuaded Cherwell that we would never make the bombing equipment work with a Klystron and that we must be allowed to use the Magnetron, so a decision was made, about a month or so after this meeting with the Prime Minister, that we would abandon all attempts to use EMI equipment with the Klystron and concentrate on the Magnetron. Now, that did make the situation much easier and I was reinforced by two or three excellent people who helped with the flying. I had two flight lieutenants, two flying officers, Ramsey and Hillman and a Canadian flight lieutenant, Richards, and an American from the United States Air Force and they were all marvellous. They took over a lot of the brunt of the flying and so by sheer... by sheer activity and constant adjustment of the scanner when flying at high altitude, which fortunately was beginning to be borne by these more experienced flying people, we gradually improved the equipment.