Prior to his election, DeVore was an executive in the aerospace industry for 13 years working on ballistic missile defense, space sensors, and space launch vehicle programs.

DeVore is a lieutenant colonel in the U.S. Army (retired) Reserve. He served as a company commander and a brigade combat team intelligence officer (S-2) and operations officer (S-3) and was activated for the 1992 L.A. Riots.

He obtained his B.A. cum laude in strategic studies from Claremont McKenna College. He studied abroad at the American University in Cairo, Egypt.

DeVore has been married since 1988 to Diane. They have two daughters.