Here is Musk using it in regards to saving the fairing @ ISS Research and Development Conference 2017:
https://www.youtube.com/watch?v=5cPMS6cT0Ig&t=825
In regards to the first stage (booster stage) at Code Conference 2016:
https://www.youtube.com/watch?v=wsixsRI-Sz4&t=545
Here is Musk using it in regards to saving the fairing @ ISS Research and Development Conference 2017:
https://www.youtube.com/watch?v=5cPMS6cT0Ig&t=825
In regards to the first stage (booster stage) at Code Conference 2016:
https://www.youtube.com/watch?v=wsixsRI-Sz4&t=545