UPDATE:
We now know of two (see S2 Underground video below) balloons. One running across the USA, one up in Canada and One (need to verify) in Central/South America. Us military response has been.......ZERO>>>>>>>
NOTE: In unrelated news, the General in charge of Ft. Sill has been fired for "hunting" on the base property. So you remember Fort Sill, (from Military.com)
"Fort Sill is home to some 20,000 troops and is central to the Army's artillery and other long range weapons training. THis included the Patriot missile system.."
Here is the possible schematic of the ChiCom balloon
And here is the grandfather of the missile that can knock it down. the ASM-135 ASAT!
Here are some tech specs on the missile. The newer one is probably a little hotter.
As noted by everyone, we have no idea what it is up to and to be honest, it should have been shot down over the Pacific. Where was SAC NORAD? or the USN Fleet Pacific? or any of our early warning stations between China and Montana? and more importantly, where is Biden and/or the Congress when it comes to action?