Australian historian Lionel Gilbert (far right) with Sydney Teacher's College classmates (Left to Right) Eric Smith, Ken Edden, and Doug Beard on the day they enlisted in the Royal Australian Air Force during World War II.  All were assigned as radar operators.
Not stated
<a rel="nofollow" class="external text" href="http://indicatorloops.com/toorbul_radar.htm">DEFENCES OF MORETON BAY - TOORBUL RADAR STATION</a>