The Nav in question (nice colour in suits) was on my crew on 8 Sqn for a while before I went rotary. He was also my 'co-pilot'/RHS when we took a Chinook up to 8 Sqn for an open day, with an ex 8 Sqn engineer down the back. The Squadron was more than a bit surprised to find an 8 Sqn crew on the 7 Sqn Chinook - but I can't remember what colour suit he wore in the mess that night.
There was only one M.G.