You're viewing old version number 4. - Current version DEFCON Levels https://en.wikipedia.org/wiki/DEFCON 5=least severe 1=most severe 1 2 3 4 5 From JR's : articles 10 words - 92 chars created on Aug 19, 2015 at 12:38:06 pm updated on Aug 19, 2015 at 12:43:56 pm - # source - versions