> almost never tethered yet you can't say never, hence the question. balloons are launched for different purposes. if you're trying to keep a balloon on statio

> almost never tethered yet you can't say never, hence the question. balloons are launched for different purposes. if you're trying to keep a balloon on station to gather local data, it's gotta be tethered. maybe not typical of a 40k' altitude, but they definitely use tethered balloons.