In 1965, The Dow Company — best known at that time for making Saran Wrap — began making Napalm, a jellied gas used in warfare in Vietnam. Napalm became the symbol of the war. Mark Greenside explains “Napalm was this hideous, jellied gas burning at 2,000 degrees Fahrenheit. It didn't just kill you; it tortured you. It has a complete reference to Zyclon-B, the gas they used in the concentration camps. It felt like chemical warfare at its worst.”