A devastating EF-5 tornado, like the one that struck Oklahoma in May of this year, can throw buildings into the air and hurt hundreds of people. In Tennessee, Tracy is preparing for just that. Tracy has spent six years prepping his farm for a super tornado, but if it does hit, he doesn't plan on hunkering down he plans on gathering his family and making a getaway in his mobile safe room. This video falls under the "FAIR USE Act. Section 3, (V) Public interest work" and is for educational purpose only. It's not monetized in any way and the sole copyright holder is National Geographic.