Assault Band Leader Lyle Schoonover was the chief engineer at Camp Determination. A Great War veteran, Schoonover had lost his lower right leg in that conflict.
In early 1943, as the U.S. Army advanced on Lubbock, the camp commandant Jefferson Pinkard had Schoonover develop plans to dynamite the bath houses and destroy the camp records so Determination would look like an ordinary prison camp rather than the death camp it was. Schoonover reminded Pinkard that nothing could be done to disguise the mass graves. Since Pinkard had realized that himself and couldn't do anything about it, he didn't flabble about it.