sentences:  The Australian Skeptics described the object as potentially having been an experimental military aircraft.They suggest that it may have been a nylon target drogue, like a wind sock, towed by one plane for the others to chase and known to be in use by the local RAAF at the time.A witness reunion was held at Westall Tennis Club Hall, on 8 April 2006, to commemorate the 40th anniversary of the incident.