I feel like if China can fly a spy balloon over the US without the military immediately noticing, we're pretty much guaranteed to lose a war with them should that ever happen.
"The size of three buses" is more than enough to hoist a nuke over the US.
Why have ICBMs when you can hover your bombs right over their targets?
The military would basically be liked "Sir, radar has picked up som..." *BOOM*
@Alex It wouldn't be the first time an enemy has floated bombs over the US by balloon.
@Alex I figure it was less unnoticed and more unbothered by.