Thanks, Moose.
I wonder if the chuckle you refer to was as loud as the guffaw when an inmate here at the Learning Centre (on OCC) made an assertion that the USN would without any doubt have the MRA 4.
Slightly offended, he referred us sceptics to the article in a respected journal (maybe not JDW as I thought. I didn't fall off my chair on reading it, but only because I was standing up at the time.
I assumed that LM must be covering all bases, but clearly not.