There could be many explanations. The most obvious being to avoid looking weak or to send a message. Especially since all this stuff is being publicized instead of swept under the rug.

That said, scrambling all these jets and having them target "balloons" just comes across as overkill. Again, these are the same governments that allows millions of illegal immigrants to cross our borders and skies everyday without second thought.

But it's "UFO's" they're more concerned about is the biggest threat to peace that requires the army to be present.