Threats that are few in number and great in number are handled by different sorts of countermeasures. If China really did flood the west in balloons, then alter

Threats that are few in number and great in number are handled by different sorts of countermeasures. If China really did flood the west in balloons, then alternate measures would be used to handle it, perhaps measures that aren't public. High altitude balloons are very fragile (you need to wear gloves to avoid getting oils on them because those can dissolve the balloon material causing them to prematurely burst). I'm sure there's many counter measures that could be used if needed.