>>15677 >>20443
It could also be a Communications Relay Balloon, used my MIL for Secure Comms Relay.
When with the Marines as a TUAS Contractor (Tech-Rep), they were using them to extend Ground Comms between AO's.. Once, I watched as one was launched and a couple of hours later, it was at 120k MSL. They partially de-gassed it, and brought it back to 80k MSL and it just stayed in that area.. over Big Bear, as there are really no winds to speak of at that altitude. The Box attached has very long Foil Antennas for Tx/Rx. When the mission is finished, they deflate the Balloon, and eject the Box, which parachutes to earth. Sounds like the one you're seeing got caught in the Jet-stream, and the CC Ground Station perhaps lost link, and now its a run-away? Who knows..