[xoxoxoBruce]

I see the main drawback to using it as a last resort, or unusual circumstances, is you still need a skilled person on each end. I would think even trained people would get rusty only using it every couple years. It's tough to wing it. I'm guessing here having no direct knowledge, but it seems logical with military special teams, each man has so many skills he must know, finding time to keep Morse skills sharp, must be tough.