Social Security records and the Find A Grave database (Memorial #72833124) show:

Leslie Ray Wenner was born February 13, 1948, and died April 25, 2004. He was a Staff Sergeant in the U.S. Marine Corp. He was living in Placer, California at the time of his death, and was laid to rest in San Joaquin Valley National Cemetery in Santa Nella, Merced County, California.