You squint through the inch-thick Perspex, as if you think you can see more then your instruments. Ahead is Tor863, one of the dozen permanent tornados-nados- that formed in Nevada during the outbreak of 2018. Like its kin, Tor863 was immense, almost twenty miles across at touchpoint, with eyewall speeds in excess of 300 mph. Unlike its kin, Tor863 had started to move and it’s your job to find out why. With a deep sigh, you stop looking through the scratched viewport, start the recorders, and put the crawler into gear. You pause for a moment, then you start the crawler down the path to the base of the nado.