Transportation safety expert Carl Berkowitz, who was not involved in the project or investigation, was flabbergasted by the mistake. "Whoa! ... that is unbelievable. How could that possibly happen? I see God was on their side," he said of the passengers. It was a "very strange" mistake, given that contractors are provided detailed blueprints for guidance, he said. "Somebody's not doing their job, that's for sure," Berkowitz concluded.