On July 16, 1969, a Saturn V rocket launched Apollo 11, carrying Neil Armstrong, Michael Collins and Edwin "Buzz" Aldrin en route to the moon.
At the base of the rocket, five F-1 engines provided the lift to help Saturn break gravity's grip. But after less than three minutes of burn, the "first stage" S-IC was jettisoned, sending the F-1 engines hurtling back towards earth, where they landed in the ocean.