Blach writes from a Ft. Myers military base. Blach acknowledges that he has not written to BR in a long time, but that his letters to Peter were also intended for BR.

He writes as he has discovered a number of things essential to warfare which BR might be able to help with. "In the modern fighter and bomber planes the fixed firing has been worked out, nearly to perfection, with numerous considerations." "The trouble is that while these facts are all known to the mathematicians, they are terribly difficult for the average gunner to grasp, and it seems to me that you would be very good indeed in evolving a very simple method of instruction to teach these gunners this very complicated method in very comprehensible language, and with minimum mathematics."

He also writes about the Sperry computing sight, which is aimed at the plane, not above, giving guns a necessary lead. "This sight is still terribly complicated and you may very well be the man to evolve a much simpler one. I suggest that you write to Einstein, who is now doing mathematical work for the Navy, and ask him whether he does not think you could do a great deal of that for the RAF, par example."

There is no indication that BR answered the letter.