In 1971 Grissom filed a $10 million wrongful death lawsuit against the Apollo program's prime contractor, North American Rockwell. In 1972, she settled for $350,000, which adjusted for inflation, would be worth nearly $3 million in 2018. As a result of her legal action the widows of Chaffee and White received $125,000 apiece. Following the "Challenger" explosion of 1986, Grissom encouraged the families of crew members killed in the incident to file lawsuits. Grissom's lawyer, Ronald D. Krist, went on to represent Cheryl McNair, widow of astronaut Ronald McNair, in her lawsuit against Morton Thiokol, the manufacturer of the solid rocket booster blamed for the "Challenger" accident.