Captive helicopter
A captive helicopter is a helicopter which is tethered to the ground with a rope, as with a captive balloon. Captive helicopters can be used for the same purposes as captive balloons.
A captive helicopter is a helicopter which is tethered to the ground with a rope, as with a captive balloon. Captive helicopters can be used for the same purposes as captive balloons.
A captive helicopter is a helicopter which is tethered to the ground with a rope, as with a captive balloon. Captive helicopters can be used for the same purposes as captive balloons.
Source: Wikipedia "Captive helicopter" · CC BY-SA 4.0
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