On the 17th of April 1970, the crew of Apollo 13 splashed down in the South Pacific. It was not known whether the Command Module had escaped damage in the incident which caused their mission to land on the Moon to be abandoned and until the final minutes of the mission, we didn't know whether they would survive re-entry.
Huge credit to the person directing the live coverage from the BBC studio. The tension is palpable and it's captured beautifully here. I remember watching this as a kid, very nervously.