New Years Eve 1968 Armed Forces radio SVN top 100 countdown

I was there in 1968 with Australian A Sqn 3 Cav. A mate taped 4 hours of the top 100 count down for New Years Eve by Armed Forces radio Siagon. The signifant part of this to me was the news. Not one mention of any thing that happened in SVN. Nothing about anything. It was as if the US troops did not exist on the face of the earth, let alone any of us.