Unfortunately these things can happen, and you've to know how to best manage, not to be caught unprepared.
This test was performed with the aid of a wireless termination system on main power, so if the drone was out of control I had a chance to get it to fall in the area permitted for this operation in my country (70 meters high , 200 of radius).
As specified in the video don't try this thing if you don't know with absolute certainty that you're doing!
Turn off the TX when the drone is flying it's not recommended in any case
This video is in italian language, but subtitles in english are available.
If you want to create subtitles in your own language or simply correct my "maccheronic english" click this link: https://www.youtube.com/timedtext_video?v=mqiOk_o6O4o&ref=share