1) I'm surprised the drone flew so well at such a high altitude. Amazing, that's well above the ceiling for most helicopters.
2) Also, the winds up there are known to be fierce, wondering if any drones were lost?
3) Did they use solar panels to recharge? Wondering about that process...
4) How high up did the drone pilot actually climb?
5) Seeing Everest from these angles, I'm like, what sane person would attempt to climb up to that summit... But I'm not much into camping, either...
6) And most importantly, did the drone pilot have to unlock anything in the DJI-fly app to fly so far above ground level? And was there cell signal to do so?