I know several masons and have visited some events in RAFShire. I know of several ex-RAF masons but none in the lodges that I have visited were regulars.
Not only that, but in keeping with other service organisations, they all seemed well on the wrong side of 55.
Maybe uniformed masons stay in their own lodges and do not join 'civilian' ones. I know a member of a lodge (name of ex-RAF unit but that is a coincidence) who only became a mason after he retired. I suspect his local lodge, that he could visit, not a stone's throw from Carterton, may well have more light blue. That might be why he is not a member of that lodge!