Jenny Taylor found this information while researching missing classmates:

Born October 5, 1945,   died February 22, 2011 in Montgomery, Texas.  Is buried in Houston National Cemetery. Survived by Wife was Debbie Southworth,   Children Troy Freeman, Richard Freeman, Sister Barbara Wallaceand husband Dick Wallace.  Grave marker reads- Southworth, Larry F.  Sgt. USAF Vietnam  1945-2011.  Always in our hearts.  Buried Section C-12, Row D, Site 048.