Virgil I. “Gus” Grissom

One year later, in March 1966, NASA announced that Grissom had been selected to command the first Apollo mission, with crewmates Edward White and Roger Chaffee. On January 27, 1967, tragedy struck during a preflight test at Cape Kennedy when fire swept through the command module. Grissom, White, and Chaffee lost their lives in an accident that stunned the nation and shook NASA to its core.

Grissom made history again in March 1965 as the first NASA astronaut to fly in space twice, serving as commander of Gemini III, the first crewed Gemini mission, alongside John Young.

Just weeks before the tragedy, Grissom wrote: "There will be risks, as there are in any experimental program, and sooner or later, we're going to run head-on into the law of averages and lose somebody. I hope this never happens, and… perhaps it never will, but if it does, I hope the American people won't think it's too high a price to pay for our space program.