red-sprite_Davis-camera-video_ISS_ESA_1big.gif (551×643) (earth.com)
This rare phenomenon occurring above storm clouds 40-70 miles above the earth has only been observed scientifically a few times previously. The link above is the first real time video of it occurring. Now some science obsessed people might try to dismiss this as some boring physics display, but we know don't we......... It only stands to reason that his magic sleigh would require periodic maintenance and practice runs. How wise for Santa to do this above the cover of thunder clouds.