Duties of the hookup men:The hookup men will be in position at the load when the helicopter arrives.As the helicopter hovers over the load, the hookup men position themselves so that the hookup can be accomplished quickly. They will ensure that the signalman can observe the operation at all times.When the helicopter is in the correct position for hookup, the static probe man will ground the aircraft by contacting the static probe to the cargo hook. The other hookup man will then place the apex fitting onto the cargo hook and ensure the hook is properly closed (and locked, if required).