I enjoyed teasing the IPT during the development phase on their traffic lights for, amongst other things, hitting ISD. It was 'green', of course. I asked what the confidence level was: "50%" came the reply. "So, it's actually red" says I. IPTL: "No, it's green!" Me: "That's red." Him: "No, it's green!" Me: "But at 50% it could be green or red, both would be right." Him: "Errrr…" Me: "Shall we call it Amber?" Him: "OK..."
50% confidence was indeed hopelessly wide of the mark, and the main processors had been specified using a standard that was obsolete before the printer ink had dried, which caused further delays. Still, it will be a shame to see it go. And trying to turn the 5 Sqn hangar back into something the Reds can use will probably cost enough to have funded the upgrade in the first place.