When 9/11 happened ALL flight traffic was grounded for days. That's how much of an impact it had. The London bus bombings of 7/7 are suitably close to be considered that kind of event but still didn't result in all large public vehicles being stopped days after the matter took place.
When 9/11 happened ALL flight traffic was grounded for days. That's how much of an impact it had. The London bus bombings of 7/7 are suitably close to be considered that kind of event but still didn't result in all large public vehicles being stopped days after the matter took place.