In December 69, I was posted to HQ Australia Forces Vietnam as a Forward Air 
Controller (FAC), attached to the USAF 504 TASG, 19 TASS, Bien Hoa.
 
I departed RAAF BUTTERWORTH by RAAF C-130 to VUNG TAU, VIETNAM on 24 
January 1970.
 
I returned to RAAF BUTTERWORTH by RAAF C-130 on 18 September 1970

the A Vietnam War Diary document