Pfarrer entered active duty with the United States Navy in October 1980 and completed Officer Candidate School in Newport, R.I in 1981.

[4] His film credits include writing, acting and production work in Navy SEALs, Darkman, Barb Wire and Hard Target.

[10] He is the author and creator of six graphic novels for Dark Horse Comics, and wrote and produced two interactive full motion videos, Flash Traffic and Silent Steel, both for Tsunami Media.

It was to be directed by Academy Award-winning director Charlie Gibson[11] and produced by John Bladecchhi and Alcon co-chiefs Broderick Johnson and Andrew Kosove.

Pfarrer was active in the 2004 effort to recall Writers Guild of America president Charles Holland, who had falsely claimed to be a wounded combat veteran, intelligence officer and Green Beret.

[14] Pfarrer is the author of the 2011 book SEAL Target Geronimo: The Inside Story of the Mission to Kill Osama bin Laden, a New York Times best-seller,[15] which was controversial because he gave a different account of the raid than had the government.