Cabby
That might be difficult
They ripped up the runway at Sheffield yonks ago.
Perhaps you will need to find another airport in ee by gum land to fit your prophesy? Something operated by [Sir Robert ] Peel perhaps?
The old chap must be spinning in his grave by now. No cops, no cop shops, no helipads... what next!
Mind you great idea about static balloons as long as they can get a protocol in place that does not require a pilot to let the string out..... Meanwhile we may forget the debacle that resulted from Greater Manchester Police owning just such a device not so long ago.