“Balloons, it turns out, are already part of that US arsenal, with the Pentagon spending $3.8 billion over the past two years on them, according to Politico. As industry expert George Howell posted on LinkedIn, “High Altitude Balloons are actually a pretty smart thing to invest in, they’re cheap, easy to transport, can be fielded in large numbers and are payload agnostic,” meaning that while they’re most likely to be carrying cameras or radar, in certain situations balloons could field a weapon.”
https://www.vox.com/world/2023/2/7/23588464/suspect-spy-china-balloon-sputnik-moment-space-race