Tail gunners were sickened by the sight of hundreds of people burning to death in flaming napalm on the surface of the Sumida River. A doctor, who observed the carnage there, later said you couldn’t even tell if the objects floating by were arms and legs or pieces of burnt wood. B-29 crews fought super-heated updrafts that destroyed at least ten aircraft and wore oxygen masks to avoid vomiting from the stench of burning flesh.