Probably taken at Fenton - When the RAAF ordered B-24s it sent crews to be trained with the 380thBG as well as others. Pilots did their conversion at Nadzab in 'war weary' B-24s then came back to the operational BG's and flew usually ten missions before being assigned to a RAAF B-24 Sq.
The 380th has a very comprehensive website
http://380th.org/380.html with rosters including the RAAF crews.