Jut got through watching both of these films, and I thought some of you would find them of interest. If you ever have the opportunity to fly a PBM, the film will show you how it's done! The Mars was the largest WW2 airplane, IIRC. The two surviving JRM's have been retired after many years of service as fire bombers; one will going to the National Museum of Naval Aviation at Pensacola, FL, and has been repainted in the overall glossy sea blue camouflage it wore in service. The other example is up for sale.Both films via YouTube.
Mike
https://youtu.be/YCKLuBi9C1E
https://youtu.be/mAQCCKB6p7A