Ten feet.
3 seconds sound clip from the Apollo 13 movie soundboard.
You can hear this line at 00:12:10 in the Blu-ray version of the movie.
Quote context
[...]
- Houston, I'm gonna reset the high gain.
- I've got the target back in the reticle.
- Okay, we're stable. Recycle the valves.
- Twenty.
- Capture.
- Gentlemen, that is the way we do that.
- Apollo 13 backup crew, you're up in the simulator.
[...]