‘Downfall’: Chilling documentary makes a case that Boeing’s greed cost hundreds of lives

The cause of two fatal crashes of the 737 Max jet (pictured during a test flight in 2020) is explained in the documentary “Downfall: The Case Against Boeing.” | Elaine Thompson/AP

Before the Space Shuttle Challenger disaster of 1986, the vast majority of us had never heard of O-rings, the seemingly unimportant but utterly essential redundant seals in the solid rocket boosters. The failure of those O-rings in one of the boosters led to the tragic explosion and the deaths of all seven crew members.