It has already been deemed bigger in scale and negative effect on the economy than the forced suspension of flights in the wake of the September 11th 2001 terrorist attacks in New York and Washington when US airspace was closed for three days.
Već se smatra da je veći po obimu i negativnim efektima na ekonomiju od prinudne suspenzije letova posle terorističkih napada na Njujork i Vašington 11. septembra 2001. godine, kada je vazdušni prostor Sjedinjenih Država bio zatvoren tri dana.