William Conrad was a fighter pilot in WWII reaching the rank of Captain.
The plane Cannon flies in is a 1960 BEECH B95 Fixed wing multi engine, #N9971R.
Martin Sheen previously played the same character he plays in this episode, Jerry Wharton, in the Cannon episode, The Devil's Playground (1/4/72).
The plane Cannon is working on is a Douglas A-26C Invader.
The saying, "power comes out of the muzzle of a gun", attributed to Hermann Goering, is actually a quote from Mao Zedong.