Bridges don't secretly collapse. And an overt collapse due to a serious, government-mandated secret weakness in design or construction leading to the revelation

Bridges don't secretly collapse. And an overt collapse due to a serious, government-mandated secret weakness in design or construction leading to the revelation that a large portion of a "free" country's transportation infrastructure suffered from similar secret weaknesses in the name of national security would be a scandal of government-shattering proportions.