Just what exactly would two other jets be able to do to decrease the danger posed by an out of control passenger inside an airliner?
Was a copilot going to step out the cockpit walk along the adjacent wings open the door from the outside and shoot her with their service revolver?
I've always wondered this, but I've assumed its because the distraction/incident might be terrorist-y and if that is the way things developed at least there would be a solution (shooting them down over the sea/fields) rather than letting them fly over London?
https://www.theguardian.com/world/2019/jul/18/abusive-woman-billed-for-85000-after-raf-scrambled-to-escort-plane
£85k fine for getting pissed, hopefully she won't be able to afford to go on holiday for a good while