The listing for "Green Hornets" at Nha Trang show "SF support", which is true, however to be totally correct, it should be listed as "SOG". We were assigned directly to SOG. Also in the 67-68 time frame our UH-1F's were converted to UH-1P's. Somewhere in the 70-71 time frame (I was gone by this time) the "Green Hornets" converted to UH-1N's.
 

Jim Burns, SMSgt USAF (retired)
20th Helicopter (SOS) "Green Hornet"