Project Horus has been flying weather balloons carrying various payloads aloft over central eastern South Australia for over two years. After all this time, only 3 payloads have been declared lost, and two of these have been due to unexpected float conditions.
Finally, to overcome this, the team has developed a command system to tell the payloads to cut-away the balloon and land where the team wants them to. Thus, the weather has been removed from the equation.
This short clip is the moment when the command and payload release system had it's first airborne test.