In May 1941, the Air Staff rejected both the Victory Bomber and the bomb, observing that the aircraft was unlikely to be completed before the war ended. The thinly-stretched resources for bombers were being mostly allocated to the already-ambitious introduction of multiple four-engine bomber projects. Aviation author Paul Brickhill notes of the decision: "It was a fair assumption that it might be disastrous to dislocate bombers in favour of the Victory Bomber, which would inevitably take much longer to develop." However, Wallis's concepts had drawn attention within the establishment and his concepts continued to be explored, in particular the value of attacking infrastructure such as dams was being recognised, and the concept for the weapon did not meet its demise in the May 1941 decision.