Argus -
I wasn't totally familiar with the reasons why Vulcans had to be parked over water pits. I was later told that it was because of the volatile nature of the Blue Streak propellant
Before people wonder how a Blue Streak was fitted under a Vulcan, I will correct it to BLUE STEEL. Blue Streak was our attempt at an IRBM/ICBM.
The Mighty Vulcan would still be a crowd puller at any air display.