Is there a plan B+ that might give Norfolk any air support?
Not all aircraft are equal, therefore not all base circles are the same size.
Example, 135P2+ takes around 5 minutes to get up and taxiing (2 stage start to the PWs and lots of avionic and role kit to get on-line), 135T2+ takes around 2 minutes.
The Npas mandate states that the aircraft will be at 126mph in the task direction 2 minutes after task acceptance
This was how the deal was sold to Cambs police authority to lose their aircraft (google Cambs PA pdf).