From what I understand Crab has the correct version. At THAT instant the available helo which could get there first was the Portland CG Helo.
Nothing unusual in that. This is why we have a little group of geeks who study the wind, the job, chicken entrails, etc and decide which is the quickest/best one to use.
What is of concern is the discrepancy between what was reported as being available in the morning and what was available "when the bluff was called" later in the day.
I suspect that the pressure that they are under causes a confusion between availability and response. All it takes is for one man to have a dodgy kebab and the system collapses.
Availability is what might fly. Response is what does fly.
(Not Crabs fault -Any abuse should be directed at that c-nut G Brown.)