On January 27, 1967, Gus Grissom was killed in a fire in a pre-launch test aboard Apollo 1 (then known as AS-204). Grissom, along with fellow astronauts Roger Chaffee and Ed White, were working in the Command Module of the spacecraft. Grissom said: “”How are we going to get to the Moon if we can’t talk between two or three buildings?,” before speaking his last word, which was a shout of “Fire!”
The three astronauts died from asphyxiation.