Well, thanks everybody. Thought I did ask the question nicely . . . .
I'm still not convinced though but accept what you say. Just thought it would be good to do what the rest of us do. And how on earth you do inter-unit coordination . . . . .

Still, I don't sit in front of a radar display these days. But if you want to see busy, I'll show you busy . . . . .
And as for 'puddle jumper'