"Inside the first stage, in reality a cavernous fuel tank, workers check antislosh rings. Before being fueled for the mission, each section was meticulously washed. Even a thumbprint could leave enough grease to react with the liquid-oxygen oxidizer and cause an explosion."
Wow.

"Inside the first stage, in reality a cavernous fuel tank, workers check antislosh rings. Before being fueled for the mission, each section was meticulously washed. Even a thumbprint could leave enough grease to react with the liquid-oxygen oxidizer and cause an explosion."

Wow.