Everyone should be worried.
I was just watching the lineup of a/c landing on 27R at heathrow.
Stretched back 15 miles over central London!!
Plenty of places to hide, plenty of targets, plenty big mess!!!
From 7000' it is quite hard to distinguish Air NZ/ Qantas from El Al or United!!
Do what the fishes do, Safety in numbers!!!
Lowers the odds it'll be you