How about a huge multi-spectacular in England near a population centre and in Scotland too. Have a commercial organisation organise and sponsor it so that all the overstretched military need to do is turn up on the day?
Have an expert in public relations prepare a suitable non-controvertial script that can appeal to all races, religions, creeds and ages?
Say near London and the M4 corridor and between Glasgow and Edinburgh. How about encapsulating the spirit of the air force?