Deke DaSilva was a Pentagon internal security officer and served in the US Army at the rank of sergeant in 2077.
Background
On August 16, 2077, DaSilva accompanied Harold Callahan in responding to Maybel Meyers' alert concerning the fight between Carol Wallace and Isabelle Franks.
Appearances
Deke DaSilva is only mentioned in the Fallout 3 add-on Broken Steel.