"Def Con One" was first issued on Chapter 22 as a single (approx. 3:44) prior to RCA signing the band. It was redone for this LP. The duration for this RCA (album) version (aka "Def Con One 1989AD") (approx. 4:00) is often written incorrectly across all formats of this LP as 4:39... more here: [m=3889].