He spent the majority of his career as a special agent of the AFOSI, where he conducted and supervised felony-level criminal, fraud, and counterintelligence investigations and operations.

Additionally, Dillon served as an assistant professor of aerospace studies with the Air Force Reserve Officer Training Corps at Rutgers University, New Brunswick, N.J.

[1] As Commander of AFOSI, Dillon was interviewed by The Washington Post about an Air Force captain allegedly spying for U.S. adversaries in West Berlin, Germany.

Dillon, along with several other retired military generals, supported the "2010 Healthy, Hunger-Free Kids Act" and urged members of Congress to refrain from pursuing any mechanism that would weaken or delay its standards.

[9] Dillon was the recipient of the following:[1] This article incorporates public domain material from the United States Air Force