Originally Posted by
birdspeed
And being well over the horizon from the surface, you won’t observe them from the ground. Only Airline pilots will be reporting them.
That is true for the brightest flares, but the recent UFO Flap in Porto Alegre in Brazil and the Jimmy Church video from Palmdale California shows that these can be seen from the ground. But pilots will definitely get the best view and are more likely to see them against the dark cloudless sky. And they're more likely to notice weird lights in the sky to ensure it isn't an airprox or collision risk.