Thanks for that. It looks like 3 to 4 hours at low level is doable in a standard Vulcan, so should be easier for 558. But 558 was maneuvering a lot, with power changes, and one wonders how much 'slack' there'd be in the fuel burn to allow anything more than fairly restrained fly-bys at the waypoints. Certainly not enough for anything dramatic at EACH waypoint one presumes?
I understand that on Saturday 558 cut it short at EMA and headed home due fuel state, so presumably, despite a gentle sortie, there wasn't an awful lot of fuel left at the end.