Detwiler worked in miniature effects, on the 1994 television film Island City.
[1] He served as miniature effects supervisor on the 1998 film, Jane Austen's Mafia!.
[1] Detwiler worked as visual effects supervisor for the television program CSI: Crime Scene Investigation.
[3] In an interview with Daily Variety, Detwiler commented on the working environment with the rest of the production team on the show: "What makes us unique is that our visual effects department has gone in-house.
"[3] Detwiler utilized latex modeling, computer graphics, and green screen work to manipulate visual effects shots for CSI.