FED, on the Vulcan there were two sets of fuel guages. One 'managed' by the copilot and the others monitored by all the rear crew.
Oddly the ones in the back always under read the ones in the front by 2,000lbs when fuel remaining reduced to 10k.
On one sortie, late at night as there was a general view of one up all up, our guest AEO asked 'final landing' at which point our skipper announced 'into visuals'.
Arriving at Ops in the crew bus the AEO asked why he had gone in to visuals as he didn't need the stats (smart AEO had checked pre-flight). 'Because I felt like it,' replied the skipper.
Whop, as the skipper received one on his nose 'why dun yu du that?'
'Because I felt like it.'