Films he has written, directed or produced include Regulus: The First Nuclear Missile Submarines (2001) the Emmy award-winning The Legend of Pancho Barnes and the Happy Bottom Riding Club (2009) and Right Footed (2015).
In addition to being a contributing editor to Wings and Airpower magazines, his articles have appeared in the Annals of Improbable Research, Naval History, the Journal of the American Aviation Historical Society, and Proceedings.
In 2007 Spark was interviewed on National Public Radio, concerning an article he wrote about the USS Panay incident,[1] and he appeared on PBS' History Detectives in 2011 as an expert on the Navy's World War II drone, the TDR-1.
In 1988, a research paper he published about a World War II mustard gas disaster in Bari, Italy won the Special Naval Award at National History Day.
Subsequently, he received a second student Emmy Award and the Cine Golden Eagle [1], both for the documentary Upholding the Promise, a film about federal judges directed by Ted Iredell.