My current theory (other than nefarious state actors) is that it’s somehow just industrial inflatable gas storage devices that got filled with lighter than air

My current theory (other than nefarious state actors) is that it’s somehow just industrial inflatable gas storage devices that got filled with lighter than air gas and took off. https://m.indiamart.com/proddetail/portable-biogas-balloon-10714158448.html https://m.indiamart.com/proddetail/portable-biogas-balloon-1...