I was checking my feed to FR24, and noticed that the default map location for me showed 2 odd markers.
I take it these 2 markers (the round ones) are indicative of some kind of balloon? They are both at a very high altitude, so I assume they are some kind of project, or are for meteorological purposes.
Registrations were: N257TH and HAL02.
I looked on FA, and while I could find the registration, it seemed to have a differing track from FR24 (unfortunately, I did not consider to screencap that at the time), and none of the vector or altitude data. [edited to add this paragraph]